Search results
- Dictionaryavoid/əˈvɔɪd/
verb
- 1. keep away from or stop oneself from doing (something): "avoid excessive exposure to the sun" Similar Opposite
- 2. repudiate, nullify, or render void (a decree or contract): "if the original owner had avoided his contract with the rogue, ownership of the goods would have reverted to him"
Powered by Oxford Dictionaries
Mar 28, 2018 · What is the point of #define in C++? I've only seen examples where it's used in place of a "magic number" but I don't see the point in just giving that value to a variable instead.
Feb 12, 2021 · 2. #define directives create macro substitution, while constexpr variables are special type of variables. They literally have nothing in common beside the fact that before constexpr (or even const) variables were available, macros were sometimes used when currently constexpr variable can be used. But both have wide area of applications which ...
Nov 27, 2015 · These are common misuse of macros in my opinion (for C++). This is not what the macro system is designed for in C++ (admittedly it was actually designed for C and the above are common good uses for C). Each of the above examples has a more safe alternative in C++. The real use of macros is conditional compilation for different types of architecture.
Dec 17, 2014 · So #define NOMINMAX is telling the compiler (or actually the preprocessor) to skip over the definitions of min and max, but it will only apply if you do it before you #include "windows.h". In the code of the question, #define NOMINMAX does appear before #include <Windows.h>.
Aug 25, 2008 · How does a stack overflow occur and what are the ways to make sure it doesn't happen, or ways to prevent one?
Sep 28, 2012 · What is the correct strategy to limit the scope of #define and avoid unwarrented token collisions. Some simple rules: Keep use of preprocessor tokens down to a minimum. Some organizations go so far as down this road and limit preprocessor symbols to #include guards only. I don't go this far, but it is a good idea to keep preprocessor symbols ...
3. #ifndef checks whether the given token has been #defined earlier in the file or in an included file; if not, it includes the code between it and the closing #else or, if no #else is present, #endif statement. #ifndef is often used to make header files idempotent by defining a token once the file has been included and checking that the token ...
I have a cross platform application and in a few of my functions not all the values passed to functions are utilised. Hence I get a warning from GCC telling me that there are unused variables. What
Mar 5, 2013 · In the use of constants the two answers above are correct, however #define is not limited to that use alone. Another example of the use of #define is macros. Macros Macros are preprocessor-utilised pieces of code, and they work exactly like other #define declarations in that regard.
Sep 1, 2022 · 2. If you #define it to "", then at each call there'll be a conversion from c-string to std::string, which is pretty inefficient. However, you can (usually) pass macro defines as arguments to compiler, which helps customization. Even in that case, it makes sense to write the static constexpr std::string name_to_use.
