note
mkmcconn
2+2 illustrates some interesting behavior.
<OL><LI><CODE>++$_ && $_++ && print eval() + eval();</CODE></LI>
<LI><CODE>$_++; print eval() + eval() unless ( $_ + 1 == $_++ );</CODE></LI>
<LI><CODE>for (2..2){$_ = $_ + $_ and print;}</CODE></LI>
<LI><CODE>$a = 2; print "$a + $a = ", $$b + $$b; BEGIN{ $b = \$a }</CODE></LI>
<LI><CODE>my $num = 2; $num =~ s/(2)/$1 + $1/gxe; print $num;</CODE></LI>
</OL>
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[mkmcconn]
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