[ABE.pm] perl regex Q
Jim Eshleman
jce0 at Lehigh.EDU
Tue Dec 14 19:08:44 CST 2004
> I have a text file that contains lines like
>
> 1.2,3.4,,5.67,78.9,,,,,0.01
>
> I want to make the line look like this:
>
> 1.2,3.4,\N,5.67,78.9,\N,\N,\N,\N,0.01
This:
perl -ne 'chomp;print join(",",map {$_ or "\\N"} split ",",$_,-1), "\n"'
should work and handle the corner cases of leading and/or trailing
commas. Likely not as fast as a regex but *maybe* easier to understand.
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