Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much
 
PerlMonks  

Re^2: Map with Regex Replace

by kennethk (Monsignor)
on Aug 08, 2013 at 14:43 UTC ( #1048585=note: print w/ replies, xml ) Need Help??


in reply to Re: Map with Regex Replace
in thread Map with Regex Replace

Regarding the older Perl workaround, Corion's solution can roughly equivalently be expressed as

map { s!.*/!!; $_ } ...
providing that the array you are feeding is not read only (i.e. @ARGV works but qw|1.2 3.4 5.6| would require the lexical misdirection) and you don't care if it mutates.

I think the more natural way of expressing this, since you are really operating on every element, would be to write

s!.*/!! for @ARGV; print "Lexicons: ", join(", ", @ARGV[FIRST_LEXICON .. $#ARGV]), "\n";
The general rule of thumb/best practice-y thing is you should only use maps when you use the return value; and for/foreach when you are operating on each element. The lexical assignment in Corion's solution essentially turns the operation into something mappier.

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.


Comment on Re^2: Map with Regex Replace
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1048585]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (6)
As of 2014-09-16 22:15 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    How do you remember the number of days in each month?











    Results (51 votes), past polls