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Re: Match the starting \>

by Crian (Chaplain)
on May 15, 2009 at 08:47 UTC ( #764215=note: print w/replies, xml ) Need Help??


in reply to Match the starting \>

You do not have to test the appearance of < and > bevor deleting them.

if (/</) { s/<//; }

does nothing different to

s/<//;

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Re^2: Match the starting \>
by almut (Canon) on May 15, 2009 at 09:42 UTC
    ...does nothing different

    it could do something different, though, if you stick more closely to what the original code was:

    if (/</) { s/^<\s//; # remove "< " at beginning of line # ...do something with lines that do/did contain a '<' anywhere }

    (not sure whether that is what the OP intended, though...)

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[karlgoethebier]: perldigious: perhaps a block if you are paranoid ;-)
[choroba]: but undef %hash and %hash = () both work, too, but the first one keeps the memory allocated, while the latter makes it available for other parts of the program.
[choroba]: iirc
[perldigious]: karlgoethebier: Well it is a pretty old and complicated (for me) bit of code I wrote (poorly by my current standards), so I'm expecting everything to break when I add the scoping and find out what else is undesireably scope changed. :-)
[perldigious]: Ah, thanks choroba, that sort of thing was precisely what I was wondering when I asked.
[perldigious]: I didn't want to tie up memory unecessarily basically, I wanted to "delete" it specifically to free it up, and wasn't sure I was even accomplishing that.

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