second keyboard for macros

.3) loop statements and switch results are not allowed in inline functions. Functions with abnormal interface declarations cannot be declared as inline functions.Let's talk about the differences between macros and functions:1. macros are used to replace simple strings (note that the replacement of strings is not the replacement of other types of parameters), while function parameters are transmitted with da

0.#define MALLOC (n, type) \sizeof(type))1. Macros can be defined like functions, such as:#define MIN (x, y) (xBut in the actual use, only when writing min (), must be parentheses, Min will be as a macro expansion, otherwise do not do any processing.2. If the macro requires parameters, you can not pass, the compiler will give you a warning (macro parameters are not enough), but this will result in an error. As depicted in C + + books, the compiler (pr

Author: Kevin Lynx Source: C ++ blog From: http://www.kuqin.com/language/20080319/4797.html Many C ++ books advise us that C language macros are the first of all evil, but things are not as bad as we think, just like Goto. MacroA major role is to automatically generate code for us. If the template can generate various types of code (type replacement) for us ),In fact, macros can generate new Code (replaceme

Tn059: Using mfc mbcs/Unicode conversion macros The following technical note has not been updated since it was first defined ded in the online documentation. as a result, some procedures and topics might be out of date or incorrect. for the latest information, it is recommended that you search for the topic of interest in the online documentation index. This note describes how to use the macros for MBCS/Un

I. MAIN objectives(because Visual Studio typically contains many development environments, it is commonly referred to as Visual C + + 20xx)Organize the predefined macros under Visual C + + 2010. To do a memo and understand, in the actual coding can consider using some of the macro as a criterion.Main reference Links: Http://msdn.microsoft.com/en-us/library/b0084kay (v=vs.100). aspxSecond, VC + + 2010 pre-defined macrosNote All of the predefined

Lecture Notes: Macros Lisp functions take Lisp values as input and return Lisp values. they are executed at run-time. lisp macros take Lisp code as input, and return Lisp code. they are executed at compiler pre-processor time, just like in C. the resultant code gets executed at run-time. almost all the errors that result from using macros can be traced to a misun

Reproduced in http://blog.csdn.net/aobai219/article/details/6092292 #if #ifdef #if defined In GNU C, a macro can accept a variable number of arguments, just like a function, such as:#define PR_DEBUG (Fmt,arg ...)/PRINTK (Kern_debug fmt,# #arg)passing variable parameter tables with variable-parameter macros (variadic macros)You may be familiar with the use of variable parameter tables in functions such a

My keyboard is Thunder Snake Black Widow Ultimate version, belongs to the programmable mechanical keyboard, recently happened a strange thing, the keypad of the 4 keys dead or alive, the specific symptoms are as follows: Keypad area of the 4 keys do not respond, or press the 4 key will be a lot of keys in order to automatically press, and the trigger of these keys have two groups, like there are two sets o

advantage of macro functions, compared to regular function calls, is that they will be expanded in place prior to compilation, helping to improve the performance of the code (is it a bit of a feeling of inline functions?). ）。 Because macros do not consider data types, it is dangerous to use macros, which needs to be taken into account. In addition, the macro is a simple substitution, the macro function mus

Speaking of macros, I'm afraid everyone can say something: A preprocessing without a semicolon (is it true ?). What then?Well ......Okay, let's start from here.The most common macro may be # include, followed by # define and .......Let's classify the macro's usage: 1. # include is mainly used to include referenced files, so far its position can be replaced by no one; 2. comment out the code. For example:# If 0.......# Endif;This mechanism is currently

The main function of macros is to simplify code writing and to simplify some areas where repeated code is needed to get code that looks more elegant. However, it is not easy to use macros well. Poor macros can easily cause disastrous consequences. This article will introduce some practical techniques for comparing macros.First is the most commonly used techniques

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 = @

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

You can easily set up double-sided print Word documents in the Word2003 Print dialog box, but there is no setup option for duplex printing in Excle2003. Users can implement double-sided printing Excel2003 tables by editing macro commands in Excel2003. 1. Edit Excel2003 Macros Command The first time you use the macro feature in Excel2003, you need to add a Personal macro workbook (that is, Pernosal.xls), and then use the Visual Basic Editor to edit t

preprocessing Directives The Swift compiler does not contain pre-processors. Instead, it takes advantage of compile-time properties to generate configuration and language features to accomplish the same functionality. Therefore, Swift does not introduce pre-processing instructions. Simple Macro In C and objective-c, you typically use a # define directive that defines a basic constant in swift, which you can use instead of global constants. For example: A global definition of # define Fade_a

VBA and Macros======The beginning of the content sounds very dull, please do not distract, resistance to look down, interest is always slowly accumulated.------------------------------------------------------------------------------1, hand in hand, record a part of their own macroReferring to VBA, I believe many people think of the macro, but VBA and macro is not the same thing? I think they're not the same thing, but it doesn't matter what we're goin

Pre-defined Macros in visual c ++I. Main Objectives (Because visual studio usually contains many development environments, c/c ++ ide is usually called visual c ++ 20xx) Sort out the predefined Macros in visual c ++ 2010. Let's take a look at the preparation and understanding. In actual coding, we can consider using some macros as the judgment standard. Http://ms

In the vs project configuration, you can see that vs provides you with some macros (macros), for example, but you cannot find the place to modify or add macros. After Google search, I found that the built-in macros of vs cannot be modified. Now there is still one problem. Can I add a new macro? In the WebKit project, y