json
How to query a json column for empty objects?
There is no equality (or inequality) operator for the data type json as a whole, because equality is hard to establish. Consider jsonb in Postgres 9.4 or later, where this is possible. More details in this related answer on dba.SE (last chapter): How to remove known elements from a JSON[] array in PostgreSQL? SELECT DISTINCT … Read more
Postgres: How to convert a json string to text?
In 9.4.4 using the #>> operator works for me: select to_json(‘test’::text) #>> ‘{}’; To use with a table column: select jsoncol #>> ‘{}’ from mytable;
How to Deserialize a list of objects from json in flutter
Well, your service would handle either the response body being a map, or a list of maps accordingly. Based on the code you have, you are accounting for 1 item. If the response body is iterable, then you need to parse and walk accordingly, if I am understanding your question correctly. Example: Iterable l = … Read more
Jenkins Pipeline NotSerializableException: groovy.json.internal.LazyMap
Use JsonSlurperClassic instead. Since Groovy 2.3 (note: Jenkins 2.7.1 uses Groovy 2.4.7) JsonSlurper returns LazyMap instead of HashMap. This makes new implementation of JsonSlurper not thread safe and not serializable. This makes it unusable outside of @NonDSL functions in pipeline DSL scripts. However you can fall-back to groovy.json.JsonSlurperClassic which supports old behavior and could be … Read more
Unhandled Exception: InternalLinkedHashMap’ is not a subtype of type ‘List
Here are 2 common ways this could go wrong: If your response is a json array like [ { key1: value1, key2: value2, key3: value3, }, { key1: value1, key2: value2, key3: value3, }, ….. ] Then, we use data[0][“name”], not data[0].name Unless we cast to an object that has the name property, we cannot … Read more
ASP.net MVC returning JSONP
Here is a simple solution, if you don’t want to define an action filter Client side code using jQuery: $.ajax(“http://www.myserver.com/Home/JsonpCall”, { dataType: “jsonp” }).done(function (result) {}); MVC controller action. Returns content result with JavaScript code executing callback function provided with query string. Also sets JavaScript MIME type for response. public ContentResult JsonpCall(string callback) { return … Read more
Could not load file or assembly ‘Newtonsoft.Json’ or one of its dependencies. Manifest definition does not match the assembly reference
To solve this, I ensured all my projects used the same version by running the following command and checking the results: update-package Newtonsoft.Json -reinstall And, lastly I removed the following from my web.config: <dependentAssembly> <assemblyIdentity name=”Newtonsoft.Json” publicKeyToken=”30ad4fe6b2a6aeed” culture=”neutral” /> <bindingRedirect oldVersion=”0.0.0.0-6.0.0.0″ newVersion=”6.0.0.0″ /> </dependentAssembly> If you want to ensure all your Newtonsoft.Json packages are the … Read more
Excel VBA: Parsed JSON Object Loop
The JScriptTypeInfo object is a bit unfortunate: it contains all the relevant information (as you can see in the Watch window) but it seems impossible to get at it with VBA. If the JScriptTypeInfo instance refers to a Javascript object, For Each … Next won’t work. However, it does work if it refers to a … Read more