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Re: Re: Merge CIDRs

by merlyn (Sage)
on Oct 13, 2001 at 01:24 UTC ( [id://118616]=note: print w/replies, xml ) Need Help??

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in reply to Re: Merge CIDRs
in thread Merge CIDRs

1 while s/^(\d*)0\n\1.$/$1/mg || s/^(\d*)\n\1.*$/$1/mg;

[download]
There's a reason I put [1] there instead of your ".". Consider what happens when you have the following: 
10010
100100
100101

[download]
The last two lines will be merged, creating 
10010
10010

[download]
And your code will strip that final 0 from both lines, creating "1001". Wrong. You must ensure that it's a 1. Can't be "any".

-- Randal L. Schwartz, Perl hacker

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