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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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GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME
grub-render-label - generate a .disk_label for Apple Macs. SYNOPSIS
grub-render-label [OPTION...] [OPTIONS] DESCRIPTION
Render Apple .disk_label. -b, --bgcolor=COLOR use COLOR for background -c, --color=COLOR use COLOR for text -f, --font=FILE use FILE as font (PF2). -i, --input=FILE read text from FILE. -o, --output=FILE set output filename. Default is STDOUT -t, --text=STRING set the label to render -v, --verbose print verbose messages. -?, --help give this help list --usage give a short usage message -V, --version print program version Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options. REPORTING BUGS
Report bugs to <bug-grub@gnu.org>. SEE ALSO
The full documentation for grub-render-label is maintained as a Texinfo manual. If the info and grub-render-label programs are properly installed at your site, the command info grub-render-label should give you access to the complete manual. grub-render-label (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-RENDER-LABEL(1)
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