Not exactly a mnemonic, but logical thinking

Perl regexes allow variable interpolation and a final $ is taken as a meta for end-of-line

Hence a $ at the beginning would be very impracticable

edit

Otherwise, what would /$var/ be supposed to match?

Cheers Rolf
(addicted to the 𐍀𐌴𐍂𐌻 Programming Language :)
Wikisyntax for the Monastery

In reply to Re: Mnemonic for begin/end chars in regexes by LanX
in thread Mnemonic for begin/end chars in regexes by Smonff

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