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petdance (2468)
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I'm Andy Lester, and I like to test stuff. I also write for the Perl Journal, and do tech edits on books. Sometimes I write code, too.
File::Find::Wanted released
File::Find is a great module, except that it doesn't actually find anything. Its find() function walks a directory tree and calls a callback function. Unfortunately, the callback function is deceptively called wanted, which implies that it should return a boolean saying whether you want the file. That's not how it works.
Most of the time you call find(), you just want to build a list of files. There are other modules that do this for you, most notably Richard Clamp's great File::Find::Rule, but in many cases, it's overkill, and you need to learn a new syntax.
With the find_wanted function, you supply a callback sub and a list of starting directories, but the sub actually should return a boolean saying whether you want the file in your list or not.
To get a list of all files ending in
my @files = find_wanted( sub { -f &&
/\.jpg$/ }, $dir );
It's easy, direct, and simple.
The cynical may say "that's just the same as doing this":
my @files;
find( sub { push @files, $File::Find::name if -f &&/\.jpg$/ }, $dir );
Sure it is, but File::Find::Wanted makes it more obvious, and saves a line of code. That's worth it to me. I'd like it if find_wanted()made its way into the File::Find distro, but for now, this will do.
--Larry Wall in stab.c from the perl source code
Nice. (Score:1)
Nothing new... File::Finder close to this (Score:2)
Mine (File::Finder, in the CPAN):
But I can also do this:
Re:Nothing new... File::Finder close to this (Score:2)
--
xoa
Re:Nothing new... File::Finder close to this (Score:2)
Cool (Score:1)