Re: syntax question

Assuming that you're in some loop and the next command is how you "exclude a field ending in X", you have the right idea. The parentheses around the regular expression are not needed. I would usually write that as next if $fld0 =~ /X$/;, but if ($fld0 =~ /X$/) { next; } is effectively the same.

Another option: next if substr($fld0,-1,1) eq "X"; (substr)

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Re^2: syntax question by QM (Parson) on Oct 24, 2013 at 08:35 UTC
Update: Sorry, I should have read the thread first, toolic said the same thing. `next if substr($fld0,-1,1) eq "X";` [download] is not exactly equivalent to `next if $fld0 =~ /X$/;` [download] since `$` at the end of a regex is a bit special. From perlre #Metacharacters: `$ Match the end of the line (or before newline at the end)` [download] -QM -- Quantum Mechanics: The dreams stuff is made of	[reply] [d/l] [select]

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Re^2: syntax question
by QM (Parson) on Oct 24, 2013 at 08:35 UTC

Update

toolic

next if substr($fld0,-1,1) eq "X";
[download]

is not exactly equivalent to

next if $fld0 =~ /X$/;
[download]

since $ at the end of a regex is a bit special. From perlre #Metacharacters:

$        Match the end of the line (or before newline at the end)
[download]

-QM
--
Quantum Mechanics: The dreams stuff is made of

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