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TL;DR: Collections are fantastic. And Polymorphic. Problems Null If Pollution Solutions Change the optional attribute to a collection. Context If you need to model something that might be missin…
What is a NULL value? 1. A field with a NULL value is a field with no value 2. If a field in a table is optional, it is possible to insert a new record or update a record without adding a value to thi…
Have you ever used the typeof operator in JavaScript and been surprised to see that it returned "object" for the value null? You're not alone! The concept of null being treated as an object in JavaScr…
Let’s take the detour… If you check the typeof(null), it will always return an ‘object’. This is a bug, as admitted by Brendan himself. Due to legacy reasons, it will never be fixed, and we have to li…
[Note: Please use chrome console to see the results] Null and undefined both are primitive data types and indicate the absence of value. They both are falsy values. Null is a language keyword however …
Null and undefined sneak into our code all the time. Either we forgot to assign a variable to an object in memory, a response from the database, or API came back with an empty object, the list is endless. Both null and undefined are simila…
Undefined Undefined data types in javascript means the variable has been declared, but has no value. Example 👇 Null Null in javascript, is an object that can be assigned to a variable as a representation of nothing or void. Example 👇 …
In every generic human language, there are parts of speech and rules that guide the usage of such. In the English Language, for example, we have parts of speech like Nouns, Pronouns, Verbs, Adjectives…
Welcome to the series "Java Coding"; brought to you by "Coding Mantis"! At the beginning of my career, I faced quite a few cases where there were complex JSON structures, deeply nested within objects …
null The value null represents the intentional absence of any object value. It is one of JavaScript's primitive values and is treated as falsy for boolean operations. null == undefined // true null === undefined // false null == 0 // false …
