How To Compare Two Json Objects In C++

Strings in C and C++ This page summarizes many of the things you may find it useful to know when working with either C-strings or objects of the C++ string class. Parse and serialize Java objects to/fro JSON up to 5x faster! Boon is not a JSON parsing project. Requirements Language. and an implementation of equals() for that kind of object. Ruby very easily can parse them into a Hash, that looks very close to what the JSON is returned at, and its much easier to parse that way then is XML. If root is the name of the Json::Value, root["first"] will return 1. Including an array of objects in the Compose action. JsonTypeAdapter allows you to customize how JaVers serializes your Value types to JSON. json file to service-account. Also, RFC 7159 is unclear about how a JSON parser should treat extreme number values, malformed Unicode strings, similar objects or handle recursion. JSONLint is a validator and reformatter for JSON, a lightweight data-interchange format. For this purpose, I was thinking to do a differential search between the original JSON & the modified JSON and save only the changes. One set of objects is the reference, and the other set of objects is the difference. json and all_data. It is derived from the object literals of JavaScript, as defined in the ECMAScript Programming Language Standard, Third Edition [ECMA-262]. Paste BSON, get JSON. The resulting json string is called a JSON-encoded or serialized or stringified or marshalled object. Just paste your BSON in the input field below and it will automatically get converted to JSON. When it comes to comparing instantiated objects it will return False unless the two objects are the result of the same instantiation. Compares the value of the string object (or a substring) to the sequence of characters specified by its arguments. Javascript is just lucky in this context (JavaScript Object Notation). Or how to create a json object and put two json string into it as array. Customise SharePoint Online Columns Using JSON – Column Formatter. Sorting a List of Objects with Custom Comparator & Lambda Function. Then the index of first element of current set which have key value pair defined in qualifier will be returned. If the two Hashcodes are different then they cannot be equal and there is no need to compare them further. You can also click on "load JSON from URL" button to load your JSON data from a URL (Must be https). These properties make JSON an ideal data-interchange language. The home of JSON Schema. JSON is useful when you want data to be human readable. It supports JSON serialization, JSON deserialization, MessagePack, streams, and fixed memory allocation. I have been told, that support for indexing into dynamic types already. Compare Two Strings in C++. MutatingWebhook": { "description": "MutatingWebhook describes an admission webhook and the resources and. Boon is the fastest way to serialize and parse JSON in Java so far. So you're most likely to see dates encoded as strings. parse method instead. Just paste your JavaScript Object Notation in the form below and it will instantly get converted to TSV. Part 11: Working with JSON Data. The JSON-LD 1. JSON is built on two structures: A collection of name/value pairs. It is more than that, but JSON parsing is intrinsic to what Boon is all about. Best way to diff two JSON files and write differences data to third file? Hi all, I'm trying to write my first python script and I can't work out the best way to diff two JSON files and write the difference to a third. So you're most likely to see dates encoded as strings. It can be also parsed by the JavaScript, jQuery and PHP. One thing to consider is the desired behavior when j1 and j2 have matching keys. Using Objects Comparer to Compare Complex Objects in C# Developers often have to compare complex objects in code. Is there an elegant way to cascade-merge two JSON trees using jsoncpp? settings from a JSON file. The only real way to compare x and y is to compare each member explicitly: x. The following code sends two customer objects in JSON:. If current set of jsonQ object is an array of JSON and elem is key value pair. The rules aim to create the best fit between a C++ initializer list and JSON values. Cast from json_value to json or json_list in constructor. If it will return 0, then both string will be equal and if it will not return 0, then both string will not be equal to each other as shown in here in the following program. You can also click on "load JSON from URL" button to load your JSON data from a URL (Must be https). 1/schema/catalog. Examples in replies. You can also click on "load JSON from URL" button to load your JSON data from a URL (Must be https). You want to know if two references are to the same object; a. But JSON can also be used to express an entire JSON object by using the same notion as an array element. Boon JSON is FAST! In addition it has a very easy to use, convention. Properties within the schema are defined and with another object containing their expected type. Ruby very easily can parse them into a Hash, that looks very close to what the JSON is returned at, and its much easier to parse that way then is XML. We can compare files in many ways like byte by byte comparison. Note that the fields section is an array of hashtables and arrays require a comma between each object. It supports JSON serialization, JSON deserialization, MessagePack, streams, and fixed memory allocation. Install the Node. It provides two implementations for the JSON objects: using maps and vectors. toString() method accept parameter called indentFactor , this set the indentation level of the generated string, which also make the JSON string generated easier to read and look prettier. The second step is often to write the standard methods that every object should have, including one that prints the object, and one or two that compare objects. Briefly, Objects Comparer is an object-to-object comparer that allows us to compare objects recursively member by member and to define custom comparison rules for certain properties, fields or types. admissionregistration. When should you use JSON Web Tokens? These are some scenarios where JSON Web Tokens are useful: Authentication: This is the typical scenario for using JWT, once the user is logged in, each subsequent request will include the JWT, allowing the user to access routes, services, and resources that are permitted with that token. An object is created and returned with a property msg that echoes the string passed to createObject():. Split function. e Load data from JSON / XML to SQL server first and then read from SQL Server to SSRS). Using this option will result in more compact output by instead putting each JSON object on a single line. For example, the following are all invalid JSON strings: "{test: 1}" (test does not have double quotes around it). simple and java Posted by: admin October 25, 2018 Leave a comment. RECOMMENDED BOOKS TO STUDY C++ +++++ BEGINNERS BOOKS FOR C++ (No previous programming experience required):. One thing I did and it works wonders is to read both objects into HashMap and then compare with a regular assertEquals(). General C++ Programming; comparing two objects. How to compare two text files using Notepad++. One way is to create an OJAI QueryCondition object and call methods in the class to construct your query condition. NET projects (version 4. Meaning whatever the user has changed, track those things to later be able to save it. It complies with the standard serialization rules and, at the same time, preserves the. Examples in replies. JavaScript object deep comparison. com/playlist?list for more C++ tutorials. pem extension certificate a X509 openSSL certificate object from server. equals(b) N/A : Compares values for equality. But JSON can also be used to express an entire JSON object by using the same notion as an array element. JsonTypeAdapter allows you to customize how JaVers serializes your Value types to JSON. gigamonkeys. The object members inside the list can use their own objects and array keys. The generated enum type also includes annotations that allow Jackson to correctly marshal/unmarshal JSON values, even when the actual values contain spaces, start with digits, or contain other characters that cannot legally form part of the Java enum constant name. This tutorial is similar to our last article in JSON abou t How to convert JSON object to Java object , i nstead of JSON object, here we will convert JSON array to String array or List in Java. Suppose you are developing an application that consumes some Web API or WCF service. My initial strategy was to convert them to JSON and compare the JSON strings. The code above creates the Express application and adds two middleware to it: body-parser to parse JSON requests, and cors to signal that the app accepts requests from any origin. To create the JSON object in the Canonical Model, as detailed at the beginning of this post, we need to create the participant object and insert two arrays of objects (steps and workouts) while creating the JSON message. The following code sends two customer objects in JSON:. js Modules with C++. The problem I'm running into is I have no idea how to tell an object to look at objects of its own class. The empty initializer list is written as `{}` which is exactly an empty JSON object. Take for instance, the comparison of two Active Directory user objects. com, we won't encourage audio ads, popups or any other annoyances at any point, hope you support us :-) Thank you. Each JSON value is stored in a type called Value. - GregFinzer/Compare-Net-Objects. I require to fail when values are different. JSON Web Signature (JWS) is a compact signature format intended for space constrained environments such as HTTP Authorization headers and URI query parameters. Recently, I was faced with a problem where I needed to compare two Javascript objects. I dont get this compare part. Stage 3: Employ Compare-Object, process the two files, and then create a third file with a list of all the files that were missing my particular phrase. Recently, the column formatting feature rolled-out to my tenant and I was really excited to explore this. Comparing x === y, where x and y are values, return true or false. Convert JSON to XML using QTP/UFT/VBScript To parse string to generate JSON object. Can you help me how to do this for all objects if possible. Several holidays ago, I got a bee in my bonnet and wrote a fast JSON parser whose parsed AST fits in a single contiguous block of memory. 6, but understands unicode (as in codecs. Because there is more than one way to express Linked Data. Is there an elegant way to cascade-merge two JSON trees using jsoncpp? settings from a JSON file. It uses 2 strings. Provides the logic to compare two JSON entities. semantic Compare two JSON objects in Java semantic json compare java (18) I'm looking for a JSON parsing library that supports comparing two JSON objects ignoring child order, specifically for unit testing JSON returning from a web service. There is such thing as std::type_info, objects of which you can compare. JSON is almost a subset of the object literal notation of JavaScript. How to: Determine Whether Two Objects Are Identical (Visual Basic) 07/20/2015; 2 minutes to read +5; In this article. py Where item1 and item2 are either a file or a url containing a JSON object. This was pretty surprising to me due to Newtonsoft. Each ship has an x and a y, and needs to compare the angle and distance of other ships' x and y coordinates to see if they're visible on the same screen. Client-side code. The following example shows creation of an array object in javascript using JSON, save the below code as json_array_object. Differences between C++ Relational operators and compare() :-compare() returns int, while relational operators return boolean value i. This method compares elements based on the ordinal. Recently, the column formatting feature rolled-out to my tenant and I was really excited to explore this. NET library to the performance of the new JSON functionality that appeared in SQL Server 2016. The compare() method can also be called as a library from other Python code, in which case item1 and item2 can also be dict or array objects. To compare two objects the object class provides a method with name equals(), this method accepts an object and compares it with the current object. This is the # 1 tool to JSON Prettify. const objOne = { "aKey": "1", "bKey": "2", "cKey": "5" }; const objTwo = { ";aKey": "4", "zKey": "286". It has a number of simple and convenient features to compare powerbuilder libraries files that many users have been asking for a long time from a PowerBuilder source code comparison tool. (Inherited from Object) GetEnumerator() Returns an IEnumerator for the Array. json_normalize can be applied to the output of flatten_object to produce a python dataframe: flat = flatten_json(sample_object2) json_normalize(flat). All comments are held for moderation. json and all_data. Again, this is possible by using the Data Operations – Compose action. Summary of Compare-Object. JSON Parser: The JSON Parser is used for to parse JSON data into objects to use its value. Otherwise, use the standard equality operators, which allow you to compare the identity of two operands even if they are not of the same type. I am using Jsoncpp but I am unable to compare the entirety of the two Json datas. 2 because PHP fails be able to compare some of the stdClass objects. We can do this by using JSON. It will call the equals() method of the hashmaps, which will recursively compare all objects inside (they will be either other hashmaps or some single value object like a string or integer). For this purpose, I was thinking to do a differential search between the original JSON & the modified JSON and save only the changes. Let's take a closer look at how we define that equality. In this tutorial, I will explain to you how to convert an HTML table to a JSON string using C#. If root is the name of the Json::Value, root["first"] will return 1. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. The key difference between JSON and XML is that JSON (JavaScript Object Notation) is a meta-language and XML (eXtensible Markup Language), as the name suggests, is a markup language. In Introduction to JSON which is one of our earlier tutorials, we had a first look at how a nested JSON looks like. Libraries to Test. Note that the fields section is an array of hashtables and arrays require a comma between each object. Json have significantly worse performance than some of the others. Implicitly, a logical AND conjunction connects the clauses of a compound query so that the query selects the documents in the collection that match all the conditions. what is best way to compare rapidJson documents. Boon is the fastest way to serialize and parse JSON in Java so far. The enriched table can then be used in Azure Machine Learning, Spark or R to understand how weather conditions affects energy production, and create a model for predicting shortages of energy production based on. , non–strict comparison), JavaScript converts the types String , Number , Boolean , or Object operands as follows:. You can query the number of (key, value) pairs with size (), insert (), and remove () entries from it and iterate over its content using the standard C++. Submitted by Jyoti Singh, on January 31, 2018 JSON is in an array format which holds the key-value pairs. I have two objects (i do get them via json) and must compare them to see if the data stored in them is the same. Although originally derived from the JavaScript scripting language, JSON data can be generated and parsed with a wide variety of programming languages including JavaScript, PHP. This makes it possible to access JSON properties using C++ map notation. Dot Net Perls has example pages for many languages, with explanations and code side by side (for easy understanding). Compare two JSON Objects and get Difference. Sample JSON String - [ { "Id" :. Email | Twitter | LinkedIn | Comics | All articles. toString() method accept parameter called indentFactor , this set the indentation level of the generated string, which also make the JSON string generated easier to read and look prettier. Json-lib What I would do is parse the json data using json-lib. Used to insert to the JSON to help the JSON more beautiful and easier to see. GroovyUtils( context ). Like JSON, BSON sup­ports the em­bed­ding of doc­u­ments and ar­rays with­in oth­er doc­u­ments and ar­rays. If in_place=Truethe object is modified in place. The Buffer class was introduced as part of the Node. Create, write and read in/from JSON file using java: Here, we are going to create two java programs, 1) program that will write content in JSON file and 2) program that will read content from the JSON file. Online tool to convert your CSV or TSV formatted data to JSON. Questions: I’m looking for a JSON parsing library that supports comparing two JSON objects ignoring child order, specifically for unit testing JSON returning from a web service. Briefly, Objects Comparer is an object-to-object comparer that allows us to compare objects recursively member by member and to define custom comparison rules for certain properties, fields or types. Objects Comparer could be used in. Json libraries (updated 23 December 2017 for some comments on decoding simple strings as returned from postgresql queries) Contents 1 Comparing cl-json, st-json, yason, jsown, jonathan and com. JSON objects are surrounded by curly braces {}. JSON-LD [] harmonizes the representation of Linked Data in JSON by outlining a common JSON representation format for expressing directed graphs; mixing both Linked Data and non-Linked Data in a single document. Boon is the fastest way to serialize and parse JSON in Java so far. I love PHP Objects. Since JSON doesn’t contain any type information, this serializer (together with the JSON. Net and Visual Basic 6), graphical Data Mapper, and Web Services toolkit. Take for instance, the comparison of two Active Directory user objects. Cryptographic algorithms and identifiers for use with this specification are described in the separate JSON Web Algorithms (JWA) specification and an IANA registry defined by that specification. Now let's try to open Json Object using IE or any other javaScript enabled browser. Parsing all JSON using JToken. As it would be extremely time consuming to manually compare the objects, I used Reflection to compare the different objects and their properties. In Java, normally we use Jackson or Gson to parse JSON. This is the # 1 tool to JSON Prettify. Each JSON value is stored in a type called Value. validate element_1 in json return value is equal to "true" I tried to use a json assertor that does reference (lists) my excel dataset but there is no way to reference a column from that dataset. The problem I'm running into is I have no idea how to tell an object to look at objects of its own class. Let’s see an example re-using the previous foo object: dynamic foo = JObject. Two Way Audio & Night Vision. The JSON-LD 1. How to Compare Two Objects with the equals Method in Java. In Java, normally we use Jackson or Gson to parse JSON. It produces the following result − Creating Array Objects. A single Relational operator is unique to a certain operation, while compare() can perform lots of different operations alone, based on the type of arguments passed. Consider the following domain Entity:. [This topic is a companion to : repctl-gettablesstatus ] Perl is distributed with a JSON ( JavaScript Object Notation) module which notably has Intro to manipulating JSON file from perl scripts. If a patch is only used once, it is not necessary to create a patch object explicitly. Most of the time, developers prefer to use the IEquatable approach to actually create an IComparer so that he can define what determines that two of your objects are equal. Here's some code: common. GetType() Gets the Type of the current instance. Bradley ISSN: 2070-1721 Ping Identity N. Also in a JSON string, all keys have to be surrounded by quotes (which is not the case in your example). So, if we declare a schema myObject. split() is based on regex expression, a special attention is needed with some characters which have a special meaning in a regex expression. Let's take a closer look at how we define that equality. What you have been waiting for :+1: Perform a deep compare of any two. It complies with the standard serialization rules and, at the same time, preserves the. The member function I am trying to make is the int Compare(const Date& d) function. because, I need to get approval to use. JSON [] has proven to be a highly useful object serialization and messaging format. Create a new folder in your development directory called node-client-app and copy your. Each key/value pair is separated by a comma. It is the externally maintained version of the json library contained in Python 2. Bar; // bar = "something". (eg, to make something that works with a non-JUnit test framework). I want to not only compare the user modified json with the original, but also save the changed data. If you want to retain a reference to an added object, independent of the lifetime of obj, you must wrap the passed object with json_object_ge. Prior to the introduction of TypedArray, the JavaScript language had no mechanism for reading or manipulating streams of binary data. NET is a pretty complete JSON implementation with lots of different choices for JSON parsing from dynamic parsing to static serialization, to complex querying of JSON objects using LINQ. 1 How to compare JSON values, objects and arrays (JSON Compare) So it is arrays that cause most problems in comparing JSON data. In this article, I’m going to compare performance of Json. GetType() Gets the Type of the current instance. It consist of what look like JSON formatted stuff. Vist: https://www. js Firebase client with; npm install --save-dev firebase. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. NET, Microsoft Office, Azure, Windows, Java, Adobe, Python, SQL, JavaScript, Angular and much more. JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. Developer faces many issues when they begin working with JSON and JavaScript in the beginning stage and this kind of solution is very handy. I have been told, that support for indexing into dynamic types already. Is there an elegant way to cascade-merge two JSON trees using jsoncpp? settings from a JSON file. a) key1 is shorter than key2, or if. A collaborative learning platform for software developers. Recently, I was faced with a problem where I needed to compare two Javascript objects. JSON TypeAdapter. I would like to have two cascading files are JSON objects. Or how to create a json object and put two json string into it as array. In this post I show how JSON date serialization works, a few approaches how you can manage dates and how to automate the process of converting JSON dates to 'real' dates more easily. In this article we will discuss different ways to compare two vectors. In Hugo, you can use all these three data formats for configuration, front matter, and custom data, but TOML is the recommended format to use for the whole project. So when you copy objects from array A to B and modify a single item that is referenced in both arrays. It depends on what sorts of comparisons make sense for the class in question, and in what contexts those comparisons make sense. But see below. If the references of these two objects are equal, then it returns true else this method returns false. Converting such an array into an object may therefore be a sensible pre-comparison step in order to get only ‘real’ changes identified. data( "name", undefined ) will return the jQuery object that it was called on, allowing for chaining. You can query the number of (key, value) pairs with size (), insert (), and remove () entries from it and iterate over its content using the standard C++. GSON is a Java library that converts Java Objects into JSON and vice versa. I will merge any pull request that adds something useful, does not break existing things, has reasonable code quality and provides/updates tests where appropriate. Examples in replies. You want to be able to return data from a Web API action method in one of two different formats - JSON or XML, and you want to control which format is used by the extension of the URL. When should you use JSON Web Tokens? These are some scenarios where JSON Web Tokens are useful: Authentication: This is the typical scenario for using JWT, once the user is logged in, each subsequent request will include the JWT, allowing the user to access routes, services, and resources that are permitted with that token. Recently, I was faced with a problem where I needed to compare two Javascript objects. The Compare-Object cmdlet compares two sets of objects. In this case j1 is over-written by values in j2. simple and java Posted by: admin October 25, 2018 Leave a comment. Chapter 4: Data structures: Objects and Arrays ¶ This chapter will be devoted to solving a few simple problems. I will start with printCard. This method compares elements based on the ordinal. The problem I'm running into is I have no idea how to tell an object to look at objects of its own class. Each ship has an x and a y, and needs to compare the angle and distance of other ships' x and y coordinates to see if they're visible on the same screen. For comparing two dates, you have to write the program like this: First you have imported the package java. pem extension certificate a X509 openSSL certificate object from server. If you know you are going to be comparing two complex objects or classes that you have created, I prefer to use the IEquatable approach to actually create an IComparer so that you can define what determines that two of your objects are equal. key1 is considered less than key2 if. SSIS JSON Source (File, REST API, OData) JSON Source Connector can be used to extract and output JSON data stored in local JSON files, JSON data coming from REST API web service calls (Web URL) or direct JSON String (variables or DB columns). Working with JSON Data. This is short, but only works if your text representation matches and is unreliable. This can be analogous to XPath for XML document. It produces the following result − Creating Array Objects. Let’s see an example re-using the previous foo object: dynamic foo = JObject. Comparing Objects using JSON in PowerShell for Pester Tests Recently I spent the good part of a weekend putting together Pester Tests (click here if you aren't familiar with Pester) for my LabBuilder PowerShell module- a module to build a set of Virtual Machines based on an XML configuration file. Because of this similarity, a JavaScript program can easily convert JSON data into native JavaScript objects. Strings in C and C++ This page summarizes many of the things you may find it useful to know when working with either C-strings or objects of the C++ string class. Alternate, java-json-tools and jackson can be used, but I prefer the first one, makes the code simpler and has support for draft06 and draft07 in addition to draft04 schema. GitHub Gist: instantly share code, notes, and snippets. pyar se MAA kehta hu. One set of objects is the reference, and the other set of objects is the difference. The Compare-Object cmdlet really shines when you're comparing collections of like objects, and, although it allows you to also compare based on specific object properties, that sometimes leaves a little to be desired. simple and java How to add a new line between each JSONObject in a JSONArray, using json. For example, in the preceding code, a property's name was first and its value was 1. Calls such as. In the above example, “ListOne” contains two objects, each with the two values of “foo” and “bar”. The JavaScript dialect of ECMAScript is a general programming language used widely in web browsers and web servers. For example :. This Java program is used to compare between two dates. JSON (JavaScript Object Notation) is now the ubiquitous language for moving data among independent and autonomous systems, the primary function of most software these days. The code was small and simple and the performance was generally on-par with RapidJSON, so I stopped and moved on with my life. json and all_data. JSON component also supports JSONPath to filter data from nested array/sub-documents. In all other cases, an array is created. data( "name", undefined ) will return the jQuery object that it was called on, allowing for chaining. In this blog post we're going to compare the parsing and serialization efficiency of three different C++ JSON libraries. It can be also parsed by the JavaScript, jQuery and PHP. In JSON, array values must be of type string, number, object, array, boolean or null. Both “foo” and “bar” get their own rows in our database table. If the two Hashcodes are different then they cannot be equal and there is no need to compare them further. DeepEquals This sample compares JToken instances using DeepEquals(JToken, JToken) , comparing the token and all child tokens. Requirements Language. each service json object structure may vary. The Buffer class was introduced as part of the Node. Sensitivity and selectivity of neurons in auditory cortex to the pitch, timbre, and location of sounds. In Java, normally we use Jackson or Gson to parse JSON. Use a comma after the ending bracket and you can pass several objects in your JSON string. Seems that Compare-Object doesn't support PsCustomObject and always reports that objects are the same. Date; which contains all the pre defined methods that will deal with dates and time. The compare() can process more than one argument for each string so that one can specify a substring by its index and by its. Comparing Objects using JSON in PowerShell for Pester Tests Recently I spent the good part of a weekend putting together Pester Tests (click here if you aren't familiar with Pester) for my LabBuilder PowerShell module- a module to build a set of Virtual Machines based on an XML configuration file. It is the externally maintained version of the json library contained in Python 2. Each ship has an x and a y, and needs to compare the angle and distance of other ships' x and y coordinates to see if they're visible on the same screen. Jackson also provides JsonNode. Next, I wanted to explore skeletal animation, so I opened Blender, modeled a tentacle, and rigged it with a two-bone skeleton that wiggled back and forth. You can create a query condition in an OJAI application in either of two ways. It has a number of simple and convenient features to compare powerbuilder libraries files that many users have been asking for a long time from a PowerBuilder source code comparison tool. In the following example we have a class Employee with two variables name, age and a. It's common to compare two objects in C# for equality, such as detecting changes for a save operation. Also in a JSON string, all keys have to be surrounded by quotes (which is not the case in your example). I cant use Jackson or any other library/API. Boon JSON is FAST! In addition it has a very easy to use, convention. JsonSlurper is a class that parses JSON text or reader content into Groovy data structures (objects) such as maps, lists and primitive types like Integer, Double, Boolean and String. You can query the number of (key, value) pairs with size (), insert (), and remove () entries from it and iterate over its content using the standard C++. If you're using a function that requires a string, you can pass variables of other types to it without throwing an exception, although your code may throw an exception when it tries to process the variable. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: