Re: Capturing occurrence counts via tr/// with variable interpolation

in reply to Capturing occurrence counts via tr/// with variable interpolation

$ans = eval "\$str =~ tr/$SrchStr/$SrchStr/";
die $@ if $@;
[download]

Update: If you want to count slashes, define $SrchString as '\/', or use a separator other than / for tr. Thanks to Corion for reminding me to point this out.

the lowliest monk

Comment on Re: Capturing occurrence counts via tr/// with variable interpolation Download Code

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Re^2: Capturing occurrence counts via tr/// with variable interpolation by ysth (Canon) on Aug 15, 2005 at 13:51 UTC
Better to just use \Q\E: `$ans = eval "\$str =~ y/\Q$SrchStr\E//";` [download]	[reply] [d/l]
Re^2: Capturing occurrence counts via tr/// with variable interpolation by Roger (Parson) on Aug 15, 2005 at 13:56 UTC
While `eval { ... }` is Ok, `eval " ... "` is evil!!!	[reply] [d/l] [select]

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