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Full Discussion: Organizing C++ Code
Top Forums Programming Organizing C++ Code Post 302561875 by Corona688 on Wednesday 5th of October 2011 12:15:16 PM
Old 10-05-2011
How you organize source files often depends on -- and is constrained by -- how you must compile and link them.

I've seen projects where each little class gets its own separate folder and makefile. These tend to be slow to compile due to all the recursive makes calling makes, and the include paths can be horrendously complex. I don't recommend this model.

On the other end of the scale, I've seen projects where the header files are all lumped in one general include/ folder, and the source files organized by folder. This lets you feed -I ./include into $(CC) and mostly forget about headers. Sometimes you see folders inside the ./include/, and files included like #include <subfolder/subtype.h>. Sometimes you see local .h files in the same source folders as the .c/.cpp files included by #include "localheader.h" alongside header files in a global ./include/ which get included by a #include <globalheader.h> This might be less useful in C++ than C, since C can get away with local-only types and undefined types a lot of times C++ classes can't.

I've also seen projects which are organized into sub-libraries internally, compiled separately and linked in with additions to include and library paths. This is sort of like the first strategy, but with many source files and headers per project instead of few. It helps compartmentalize things while reducing the amount of headaches from enormous path lists and recursing recursion...

It might be useful to really break it up into separate libraries, too. I've often found large applications to be full of things which should have been libraries, being useful in other contexts or easily replacable by standard equivalents, but weren't... Sometimes that's the only thing which makes a 'large' application 'large'...

It's much easier to compartmentalize a C library than a C++ one. It's also much easier to bind C code than C++ code into other languages. This is why you'll often find libraries written in pure C, and C++ template wrappers to turn them into classes for people who want them.
Last edited by Corona688; 10-05-2011 at 01:32 PM..
 

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LEARN ABOUT ULTRIX

rmf

rmf(1mh)																  rmf(1mh)

Name
       rmf - remove folder

Syntax
       rmf [ +folder ] [ -help ] [ -[no]interactive ]

Description
       The  command  removes all of the messages within the current folder, and then removes the folder itself.  If there are any files within the
       folder which are not part of MH, they are not removed, and an error message is displayed.

       You can specify a folder other than the current folder by using the +folder argument.  If you do not specify a folder, and cannot find  the
       current folder, asks you whether you want to delete instead.

       If the current folder is removed, it makes current.

       Note that the command irreversibly deletes messages that do not have other links, so use it with caution.

       If  the folder being removed is a sub-folder, the parent folder becomes the new current folder, and tells you that this has happened.  This
       provides an easy mechanism for selecting a set of messages, operating on the list, then removing the list  and  returning  to  the  current
       folder from which the list was extracted.

       Using to delete a read-only folder deletes the private sequence and current message information from the file, without affecting the folder
       itself.	If you have sub-folders within a folder, you must delete all the sub-folders before you can delete the folder itself.

Options
       -help	 Prints a list of the valid options to this command.

       -interactive
       -nointeractive
		 Asks for confirmation before deleting a folder.  By default, deletes a folder and its messages without asking	for  confirmation.
		 If  you  specify  the	-interactive option, asks if you are sure before deleting the folder.  You are advised to use this option,
		 since when deletes a folder its contents are lost irretrievably.

Examples
       This example shows how asks for confirmation when the -interactive option is used:
       % rmf -interactive +test
       Remove folder "test"? y

Profile Components
       Path:   To determine the user's Mail directory

Files
       The user profile.

See Also
       rmm(1mh)

																	  rmf(1mh)
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