> ?

Well AnoMonk said "single quotes ... prevent variable interpolation" that's misleading.

update

maybe clearer with an example

  DB<106> %h = (x => 0, '$1' => 1);
 => ("x", 0, "\$1", 1)

  DB<107> $s = 'axb'
 => "axb"

  DB<108> $s =~ s/(x)/'$1'/r;             # no prevention
 => "a'x'b"

[download]

single quotes on the RHS of s/// never prevent interpolation.

Interpolation is the process to translate "$a $h{$b}" to $a . " " . $h{$b} at compile time.

But the keys of a hash-fetch are not interpolated they are executed, otherwise something like $h{$a$b} wouldn't cause a syntax error.

Cheers Rolf

(addicted to the Perl Programming Language and ☆☆☆☆ :)

In reply to Re^6: In place search and replace with a hash by LanX
in thread In place search and replace with a hash by hkates

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