razer macro

Inline functions can speed up the program as compared to normal functions, because no interrupt calls are required, and inline functions can be embedded directly into the target code at compile time, and the macro is simply a replacement. Inline functions do parameter type checking, which is a disadvantage of inline functions compared to macro definitions. Inline refers to the embed code, which is where the

/* Way One */ %let x=5; %let y=test; %put x y; /* Mode two */ Data _null_; Call Symput (' x ', 5); Call Symput (' y ', ' test '); Run %put x y; /* Mode three */* if there are multiple records, only the value of the first bar */ Proc SQL Noprint; Select min (weight), max (weight) Into:minw,:maxw From Sashelp.class; Quit %put MINW maxw; /* Create more than one macro variable and assign a value that is not created if the range of records is exceeded */ P

Http://tech.e800.com.cn/articles/2009/727/1248665385863_1.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 generateCode. If the template can generate various types of code (type replacement) for us ),In fact, macros can generate new Code (replacement and addition of symbols) on the symbols ). You can find some macro Synt

Value of Do{}while (0) When macro definition (#define) in C languageRecently found in the code of the new company everywhere used do{...} while (0), Google a bit, found that stack overflow early on a lot of discussion, summed up the discussion, coupled with their own understanding, do{...} while (0) the value is mainly reflected in:1. Increase the adaptability of the CodeThe following macro definition does

Recently began preparing for a lab study while documenting some of the programming trivia points encountered. Today when testing the SVD decomposition of matrices, we need to define the size of the rows and columns of the matrix, and I used to define these two variables with a macro definition, and when I run, I start thinking about what the difference between the macro definition and the constant is.Refer

Ladies and gentlemen, crossing, the last time we were talking about the example of a Boolean –bool type in C, this time we're talking about a built-in macro . Gossip Hugh, words return to the positive. Let's talk C chestnuts together!Crossing, we introduced the built-in macros in the C language in the 124th time, introducing the commonly used built-in macro _line_ and _file_. It also describes how to use t

Pre-compilation is the first step in the entire compilation process. It is the result output by the g ++-E option. This step processes Macros in the source file/header file. Macro commands are commonly used in the following categories: File Inclusion: # includeMacro definition: # define, # undefConditional compilation: # ifdef, # ifndef, # if, # elif, # else, # endif1. File Inclusion # includePre-processing will include all the content of the file to

Benefits of using do {} while (0) in macro definition #define MACRO_NAME(para) do{macro content}while(0)The following reasons are summarized: 1. the empty macro definition avoids warning: # define foo () do {} while (0) 2. An independent block exists, it can be used to define variables for complicated implementation. 3. If the

Cases: QA some vim command QThis macro only records the VIM command to register a, which can be executed with the command:@aYou can also add the number of executions:[Email protected]Performed 10 timesOnce you have performed a @a, you can use@@To repeat the execution of @aWhen you find that there is a register command macro is wrong, you can re-write the command

PS: haven't written blog for a long time, 1 is not to write, 2 is not what dry. Recently accumulated some things, can be taken out of the sun. Ha ha. First of all, boss let me simplify the code of case class copy to make it easy to read. Case Class A (a:string,b:int) Cases Class B (a:a,b:int,c:string) Val B = B (A ("a", 2), 3, "C") B.copy (A.copy (b=2))//above is a simple example,If the case class is multiple nested, it produces a similar//a.copy (B.copy (c.copy (D.copy ...). Extra-long code. At

Problem:Last year with pig a series of reports and ETL development, feel pig is very good, no hive of the delicate, and more than the rough mapreduce to the delicate, very called hand. The new year is just about the previous program adjustments, which are optimized for pig-written scripts. After all, the more you use it, the more you'll find the pig's charm.In finishing the previous pig program, found a problem, that is, pig does not extract the size of the data set function, so every time to ta

Recently in the Apue with the source code, see its error handling file used in the variable parameter list (below), just recently always see these functions in front of the eyes, so just make a break. Ha ha.#include "apue.h" #include 1. First, revisit the commonly used functions with variable parameters to format the output function family as an example:#include The function of these two sets of functions is the same, the difference is that the following uses a variable of type va_list, that is,

Selected Recently because of machine problems, began to use UltraEdit, used a few times, now carefully pondering a handful, only to find this editor true too good, powerful, really is the coding of the weapon, currently UE has been published to V11, has been supported by the default C # The coloring of the language (which is one of the important reasons why I choose UE). In the evening when debugging a C # applet, found that the UE has a code for debug is not the area, is the lack of code block

Macro definition of C Language notes (1) Symbolic Constants Macro definition is a replacement strategy in C language, that is, using preprocessing commands # define equals a string of (lengthy) texts with a name (macro, then you can batch use Macros in the source code. In the preprocessing phase, replace the macro in t

There are two types of macro definitions: macro definitions without parameters and macro definitions with parameters. Macro definition without ParametersThe general format of macro definition without parameters is: # Define macro

Some people regard macros as the beasts of the flood, and even require them to be completely abandoned from C/C ++. Some people regard macros as the supreme template, which is widely used in logic code. I personally think this is a matter of opinion and wisdom. It is unnecessary to abandon it. Let's look at some classic applications of macro in MFC and ATL, you will find that if you do not use macros to Implement Message ing and object ing, it will ma

The so-called traditional virus refers to the virus of the boot type and the file type. The writing of this virus requires considerable experience in programming and a deep understanding of the DOS operating system, designing a virus usually takes several days to weeks, but on the contrary, it is easy to write the most popular file macro virus. Skilled people can create a virus in dozens of minutes, several virus variants can be made in one day, so wr

MCU ProgrammingDiscover several practical problems1. If you use the stack SP to protect some variables from passing in the called functions in the program process,That is, use SP in the function. Note that when the function is called, a PC will be pushed to SP, SP + = 2, and thenIf you continue to think that the sequence pop is protected in the functionThe problem is that after the first step, the PC content is played. Of course, when the last function is ret, the value of pop-out PC is also cha

On October 16, the secret technology exchange conference and Product Expo opened in Qingdao. This information security and confidentiality technology industry event is more professional and larger than previous events. It has gathered leaders from relevant national authorities, experts and scholars, and representatives of outstanding enterprises. Cloud Macro carrying the High Security virtualization platform cnware? Participating in this Conference wo

1. About macros Macros are very common in C/C ++. in C language, how to use Macros in macro C (and C ++) belongs to the scope of compiler preprocessing, concept of compilation period (rather than runtime) Function calls are performed when the program runs after compilation and memory is allocated. Macro replacement is performed before compilation. memory is not allocated.