macros for dummies

The first part: MacroWhy use macros? because a function call must transfer the execution order of the program to an address in memory of the function, the program content of the function is executed and then returned to the place before the function is transferred. This transfer operation requires the site to be saved and the address of the memory to be executed before it is transferred to the site, back to the scene, and continue with the original sa

Correct use of IOS macros (define) and constants (const)In iOS development, macro definitions are often used, or some data types are modified with const, and often developers do not know how to use them correctly, resulting in the confusion of macros and const decorations in the project.Can you distinguish between the following? Do you know when to use it?#define Hscoder @"Hansha haha"nsstring *hscoder = @

Some object macros are defined in standard C and each compiler. These macros start and end with "_" and are all uppercase characters. these predefined macros can be # UNDEF or redefined. The _ file __,__ line __,__ data __,__ time __,__ stdc _ Standard predefined macros are defined in the ansi c standard. GCC extends i

Using macros to call DirectX com Many Microsoft DirectX interfaces define a macro for each method, which makes it easier to use these methods in your application. You will find these macros in the header file of the interface declaration. These macros are designed to be Macros in C and

This article mainly introduces the simple use of Zabbix macros and monitors Redis related metrics through custom scripting.Zabbix monitoring Redis requires a custom script to monitor, and scripts on the network are not very useful for having multiple Redis instances on a single machine. the next monitoring script is modified so that it can accept incoming port parameters. Principle: Filter out information for info output via Redis Client connection co

In editing macros macro: An action or a set of actions that you can use to automate tasks. You can record macros in the Visual Basic for Applications programming language. , you should familiarize yourself with the Visual Basic Editor (Visual Basic Editor: An environment that writes new Visual basic for Applications code and procedures, and edits existing code and procedures.) The Visual Basic Editor includ

Macro: Use a string to replace an expression code or function call code. Before compilation, the Preprocessor uses the expression code or function call Code represented by this macro string to replace all the macro strings that appear. In this case, the function call Code represented by a macro does not need to open up the function stack, and does not need to protect and restore the function call site. This improves the code execution efficiency, calling a macro is more effective than calling a

1.Inline functions and macros: Inline extension is used to eliminate the time overhead for function calls. It is usually used for frequently executed functions. A function with a small memory space is very beneficial. So what is the relationship between inline functions and Macros ?? In fact, the functions of inline functions are similar to those of preprocessing m