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Top Forums Programming Why no header file is OK for implementation? Post 303000392 by yifangt on Tuesday 11th of July 2017 12:43:33 PM
Old 07-11-2017
Why no header file is OK for implementation?

A very basic thing but quite strange to me.
There is not corresponding header file (fastq.h) for the implementation fastq.cpp which has the line: #include "fastq.h", in a package source code, but at compiling of the whole pkg I did not get any error.
There is no #indef/#endif condition. Checked the compiling process, the fastq.h was never created from the intermediate steps, or by cmake/configure or any other process.
I am quite confused whether a header file (fastq.h) is not needed for the implementation fastq.cpp, as normally the header file is must for the corresponding implementation.
Then my next question is, under which circumstance the header file is not needed?

Thanks!
 

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set_color(1)                                                           fish                                                           set_color(1)

NAME
set_color - set_color - set the terminal color set_color - set the terminal color Synopsis set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR] Description Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple, cyan, white and normal. o -b, --background Set the background color o -c, --print-colors Prints a list of all valid color names o -h, --help Display help message and exit o -o, --bold Set bold or extra bright mode o -u, --underline Set underlined mode o -v, --version Display version and exit Calling set_color normal will set the terminal color to whatever is the default color of the terminal. Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey font color, while set_color --bold white will result in a white font color. Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator. set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of ncurses and recompile fish against it in order to fix this issue. Version 1.23.1 Sun Jan 8 2012 set_color(1)
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