Whether predefined macros in CPP should be replaced by inline functions

in < Effective CPP >, there is a clause like this:
Modern CPP programming principles do not recommend the application of macro definition constants or function macros. You should use-sharpdefine as little as possible and, if possible, use const variables or inline functions instead.

but in the Debug program, you need some predefined macros, such as _ _ DATE__,__FILE__,__LINE__,__FUNCTION__, etc. In the face of this situation, should inline be used instead of define?

how to replace the following if needed.

-sharpdefine log_err(M, ...) fprintf(stderr, "[ERROR] (%s:%d: errno: %s) " M "\n", __FILE__, __LINE__, clean_errno(), -sharp-sharp__VA_ARGS__)

C cPP

Mar.23,2021

I think the greatest value of using define is whether it is possible to condense large chunks of repetitive code into define, for subsequent use, possibly using a macro to solve large chunks of repetitive code. For example, message mapping in mfc successfully condenses a lot of repetitive code into one or two macros. Although mfc itself is complex, the use of its macro definition can be regarded as a textbook. Other common usage scenarios, such as defining functions of variable length, are the examples you give. For example, related to the operating system and compilation environment, such as _ _ FILE__,__LINE__,DEBUG and so on. As for the possible substitution you are talking about, I think it is to define constants, simply defined functions, and so on.

the meaning above is right. For replaceable macro definitions, such as defined macro constants, or macro functions, try to use const or inline

sometimes macros have special uses.

/*Adapted from HttpParser*/
-sharpdefine XX(meth, str) \
case (char == HTTP_-sharp-sharpmeth): \
    http_parser->method = HTTP_-sharp-sharpmeth;

...
-sharpundef XX

this makes it impossible to replace

with inline.

Previous: Windows kernel programming, the problem of applying for content space and then releasing it

Next: Vue countdown

The preorder of the binary tree traverses, do not understand what this question let me return (C language), cPP I do the opposite
binary tree preorder traversal ** * Definition for a binary tree node. * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; * ** * Return an array of size *returnSize. * Note: The returned arr...

C cPP algorithm

Feb.27,2021
Code interpretation of programming problems
pairs of positive integers (xpeny), the remainder of xrecery y is greater than or equal to k, the input is nmemery k, and the output is how many, for example, input 52, output 7, logarithms are (2magin3) (2magin4) (2mem5) (3pyrr5) (4preline 5) (5pc5), t...

Java c cPP python

Feb.27,2021
In logical calculation, how to encounter true retention and false inversion?
for example, if there are two Boolean variables amenb, respectively, when b=true returns acentrology false, it returns! a, how to implement it with simple operation? how should I write a xxx b xxx? is actually a question of how to: true true f...

Javascript c-sharp c cPP java

Feb.27,2021
Tetris problem
the map of Tetris is implemented in a two-dimensional array, and squares are also implemented in arrays, but I just don t understand how maps interact with squares. is how to know where the square is on the map. Besides, although the two-dimensional ...

C cPP java php javascript

Mar.03,2021
Message format of tcp
this is the format of tcp messages on the Internet and in books. I just want to ask, is it the same in actual transmission? For example, the first part of tcp, with a total of 6 segments from top to bottom, is also juxtaposed with 6 segments during t...

Php java c cPP

Mar.03,2021
Cut the rope, cut the rope of length n into m segments, and find the maximum value of the length product of each segment (mforce n is an integer)
cut the rope, cut the rope of length n into m segments, and find the maximum value of the length product of each segment I would like to ask myself what is the idea of typing n and m ....

Java c cPP

Mar.04,2021
One-dimensional closest point crashes too much data
< H1 > include < iostream > < H1 > < H1 > include < time.h > < H1 > < H1 > include < stdlib.h > < H1 > < H1 > include < math.h > < H1 > using namespace std; problem: partition function does not work effectively; typedef double Type; typed...

C cPP

Mar.04,2021
In MFC development, how to change the picture content of pictureBox by clicking a button?
in MFC development, how to change the picture content of pictureBox by clicking a button? this property in pictureBOX: how to add code to the button to make pictureBOX load another picture when you click the button, thank you! ...

Mfc cPP

Mar.04,2021
In MFC development, how to switch tabControl pages with a button?
in MFC development, how to switch tabControl pages with a button? for example, in C-sharp, you can click the button to switch pages by adding the following statement to the button: this.tabControl1.SelectedIndex = 2; but only these two attributes ...

Mfc cPP

Mar.04,2021
C language self-learning, how to jump and implement?
when I read a book, I write the following code and type . -sharpinclude<stdio.h> -sharpinclude<stdlib.h> *acb* void butler(void); int main() { printf("a"); a butler(); void butler printf("b"); b return 0; ...

C cPP

Mar.05,2021
Ask everyone to help write a rule?
the original rule is as follows [1-9] {1} [0-9] {3} now I want to rule out the result of 2035. How do I write it? because I m in a hurry, I can t think for myself. Regularity is my weakness. Thank you! ...

C cPP java php javascript

Mar.05,2021
How to understand static void * a = & a;?
how to understand this line of code? static void * a = &a; I saw it on the source code of AFN. static void *AFHTTPRequestSerializerObserverContext = &AFHTTPRequestSerializerObserverContext; The AFURLRequestSerialization.h file is used wh...

C afnetworking3.0 objective-c cPP

Mar.06,2021
My side of the project code is UTF-8, nearly 2 days before the launch of the customer said that the assigned database is GBK, and the database code can not be changed, is there any solution?
big head. ...

Oracle spring c cPP java

Mar.06,2021
The TEXT () macro in vs reported an error, and the real parameters of the "const wchar_t *" type are incompatible with the formal parameters of the "TCHAR *" type. What should I do?
this is from https: msdn.microsoft.com en., I also use the unicode character set, ask for help! ...

Objective-c c cPP

Mar.09,2021
Calculating the length of three sides of a right triangle by knowing the radius of the inner tangent circle in C language
-sharpinclude<stdio.h> -sharpinclude<math.h> void solve(int r) { for(int a =2*r;a <80; a PP) { for(int b = a;b < 900; bPP) { int c=a*a+b*b; if( fabs( sqrt(c) - (int) sqrt(c) ) < 1e-8)...

C cPP algorithm

Mar.10,2021
The problem of playing multi-audio with FFmpeg + SDL
requirements: play two audio files at the same time (duration: one long and one short). Playback requirements: as shown in the figure: Audio file 1 plays normally, and the total length of the file is greater than the set playback duration Audio...

Ffmpeg c cPP Audio

Mar.10,2021
The problem of bit Domain in C language
-sharpinclude <stdio.h> struct{ unsigned int widthValidated; unsigned int heightValidated; }status1; struct{ unsigned int widthValidated : 1; unsigned int heightValidated : 1; }status2; int main(void){ printf("Memory siz...

C cPP

Mar.10,2021
When GCC compiles, undefined reference to appears
1. Under folder A, there is a folder B 2. Generate static libraries in folder B, assuming that the ld.a, source code is written in C 3. The .CPP file in folder A, a function that references the source code in folder B, and links to the static library ...

Linux linux-compilation-installs gcc cPP c

Mar.12,2021
What is the difference between iPP and iTunes 1 when using the comparison operator in CPP?
this is the insert function of the array linear table written in CPP. In the second if condition, there is no problem if you use listSize+1, but there is an error (non-compilation error) if you execute the listSizePP program . void insert(int location, ...

Data-structure c cPP

Mar.12,2021
How to convert YUV420 data to CMSampleBuffer? of kCVPixelFormatType_32BGRA
the YUV420 data is obtained by pulling the data. How to transfer the CMSampleBuffer, that needs to be converted to kCVPixelFormatType_32BGRA? ...

C cPP swift objective-c

Mar.14,2021