what purpose of void

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

SyntaxVoid expr The void operator calculates the expression expr and returns undefined. Example:> Void 0 Undefined > Void (0) Undefined > Void 4 + 7 // because the void ratio + has a higher priority, this expression is parsed to (void 4) + 7 NaN >

In view of the need to use the GPU CUDA this technology, I want to find an introductory textbook, choose Jason Sanders and other books, CUDA by Example a Introduction to the general Purpose GPU Programmin G ". This book is very good as an

Basic data Structures-general-purpose dynamic arraysThe application of dynamic array is mainly for the unknown length array, first open up a space to store the data, when the space is not enough, open up twice times the space to store the dataThe

One, unable to move the "address"-void pointer 1.1 void pointervoid * denotes a " unknown type " pointer, and it is not known how many bytes from this pointer address begin with a single data. and using int to represent pointers, but more

The purpose of forced type conversion in C language, the basic format, the essential meaning of variables in C, and the essence of Variables C forced type conversion Reading directory: 1. Purpose and basic format of forced type conversion Ii.

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

void keywordThis section describes how to declare and invoke a void method.The following example declares a method named Printgrade and calls it to print a given score.Example public class Testvoidmethod {public static void Main (string[]

In-depth understanding of COM (I) -- The method parameter types are cruntimeclass * and void *. I often see questions on the Forum about how to pass void * or a custom class, such as class Ca and Ca. This article describes how to pass a pointer to

Front. There are a total of 46 operators in JavaScript, and there are many operators in addition to the arithmetic, relational, bitwise, and logical operators described earlier. This article describes the conditional operator, the comma operator,