Linux man C + + library functions

By default, Linux is man is not able to consult C + + standard library functions, this is inconvenient, there is no way to direct the man C + + standard library functions?
Of course there is, but to do their own hands, to be clothed!

1. Download and install Manpages

If the Linux under Man is not the standard C-language function, it is because there is no manpages, you can install it yourself!

yum install manpages

This approach does not solve the C + + standard library function query problem, we need to download the relevant man page ourselves

• C + + man pages:ftp://gcc.gnu.org/pub/gcc/libstdc++/doxygen/(no FQ to access, except for the Great Wall of the pit daddy)
  
• Github:https://github.com/jimmy-nie/vim.git (prevent the above URL from not going)

Note, be sure to download libstdc++ xxxxxx.man.tar.bz2 , because this is the real man pages, it is recommended to download the latest version, support C++11/14 and other standards

After the download is complete, unzip the command:

tar -jxvf libstdc++-man.4.4.0.tar.bz2

After the decompression is complete, the extracted content is copied to /usr/share/man/man3 , note, do not overwrite the original MAN3 folder!

2. Querying C + + library functions

To avoid confusion between the operating system and C + +, the currently installed C + + man pages are different from the direct query of the C language standard function, which requires a namespace restriction:

• Man namespace::function: standard library function query
• Man Namespace::header: Standard header file Query
• Man Namespace::class: Queries for classes in some standard libraries

If I want to query string.length usage, I need to query first and man std::string then use the /length search function

Linux man C + + library functions