|Do you know where your variables are?|
Simple Regex Question / Code Reviewby marquezc329 (Scribe)
|on Oct 11, 2012 at 08:17 UTC||Need Help??|
marquezc329 has asked for the
wisdom of the Perl Monks concerning the following question:
I've been working through Kernighan and Pike's The Unix Programming Environment as well as Kernighan and Ritchie's The C Programming Language and basically just rewriting c and sh scripts in Perl for practice (and because sometimes I just enjoy finding short Perl scripts to replace more drawn out examples of C).
I wrote the following to take a list of files from the command line and run them through gcc if their filenames qualify. Nothing difficult, but it's nice to finally write a functional piece of code that I can use while I continue learning Perl/C/*nix. I'm hoping to receive input on style (in particular my use of control structures/loops and regex's) and any general coding conventions I may be missing. I'm still a beginner so I fear that in reviewing my own code I may be missing weighty details in my learning.
Is there a "better" way of handling filenames, and their modifications, to be passed to gcc for each file than my use of a hash? I tried to modify the filenames inline as in different combinations of things like:
I couldn't get it to work syntactically, and I understand that clarity is sacrificed this way, but I suppose curiosity got the best of me. Is something like this even possible? I couldn't really find anything on Google about calling a Perl function within a Unix function within Perl.
My other question is regarding my use of substr() to remove the .c from the filenames. I tried to use a regex first instead of substr(), but I don't think I'm completely understanding the documentation I've read on using regex's for substitution. If a monk could provide an example for this particular situation to facilitate my learning, it would be greatly appreciated.
Thanks again for any input, and I apologize if this post is unwittingly simplistic.