return void 0

Void description Void is "no type", void * is "no type Pointer", can point to any data type. Void pointer usage Specification① The Void pointer can point to any type of data, that is, the void pointer can be assigned a value to any type of data.

When learning underscore.js, it is often found in the source code that resembles the following:if (context = = = void 0) return func;if (array = = null) return void 0;Have not seen this writing before, to search the Internet some information, just

A few days ago I saw a macro, and it was probably like this:#define ASSERT_PARAM (expr) (expr)? (void) 0:assert_failed ((U8 *) __file__, __line__))The meaning of the code is simple, the key is the use of that (void) 0, I was the first time to

Reasons and benefits of using & quot; return obj ==void 0 & quot; in javascript When I learned about underscore. js, I found that the following code often appears in the source code: if (context === void 0) return func;if (array == null) return void

Profound analysis of void and void pointer meaning, void pointer ParsingRules for using the void Keyword:1. If the function does not return a value, the void type should be declared;2. If the function has no parameters, the void parameter should be

I. Wild pointer The "wild pointer" is not a NULL pointer, but a pointer to the "junk" memory. There are two main causes of "wild pointer: (1) pointer variables are not initialized. When a pointer variable is created, it does not automatically become

1. OverviewMany beginners do not understand the type of void and void pointer in C + + language, so there are some errors in usage. This article will explain the profound meaning of the void keyword, and detail the methods and techniques for the use

Javascript: What does void (0) mean and the difference between href = # And href = javascriptvoid (0, In Javascript, void is an operator that specifies to calculate an expression but does not return a value. The format of the void operator is as

A Deep Exploration of C + + language void and void pointers1. OverviewMany beginners do not understand the void and void pointer types in the C + + language, so there are some errors in their use. This article explains the profound meaning of the

Sometimes we need to trigger an event without returning a value during js writing, so we may need to write href = "#", which contains a location information. the default anchor is # top, that is, the top of the Web page. When you click this link