[sf-perl] Unusual Perl "feature"

[Earl Ruby]

I made a typo and found a new feature.

I have no idea what this feature is for:

> perl -e 'use strict; my $name = - "NAME"; print "$name\n"; print "Perl prepended a minus sign to my string\n" if $name eq "-NAME";'
-NAME
Perl prepended a minus sign to my string

Interesting behavior. Can anyone give me an example of what is this used for?

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