Re^3: Extract Multiple Lines from the End of a multi-line string

Oops, missed the second question.

and also the [0] on the end of the return?

In list context, the match operator returns what it captured. I used a list slice to force list context.

$x = 'abc' =~ /a(.)c/;         # 1 (or false on fail)
@x = 'abc' =~ /a(.)c/;         # b (or () on fail)
$x = ( 'abc' =~ /a(.)c/ )[0];  # b (or undef on fail)
[download]

I could also have used

$x = 'abc' =~ /a(.)c/ && $1;   # b (or false on fail)
[download]

Comment on Re^3: Extract Multiple Lines from the End of a multi-line string Select or Download Code

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Re^4: Extract Multiple Lines from the End of a multi-line string by NateTut (Deacon) on Oct 17, 2008 at 16:15 UTC
Thanks for the explanation. I was trying to do something like (.*\n){5} and was getting nowhere.	[reply] [d/l]
Re^5: Extract Multiple Lines from the End of a multi-line string by ikegami (Patriarch) on Oct 17, 2008 at 16:58 UTC
Presumably followed by `\z`? Your last line doesn't end with `\n`, and that's a bad use of capturing parens.	[reply] [d/l] [select]
Re^6: Extract Multiple Lines from the End of a multi-line string by NateTut (Deacon) on Oct 17, 2008 at 17:03 UTC
Yes it was followed by /z. Why is that bad use of capturing parens?	[reply] [d/l]
Re^7: Extract Multiple Lines from the End of a multi-line string by ikegami (Patriarch) on Oct 17, 2008 at 17:09 UTC
Re^8: Extract Multiple Lines from the End of a multi-line string by NateTut (Deacon) on Oct 17, 2008 at 18:20 UTC