I swear once, many years ago, someone showed me something similar to $var || $var = 1;
Probably what they showed you was: $var ||= 1; which sets $var to 1 unless it evaluates to true.

Note this is not the same as perl 5.10's // operator since the assignment will take place if $var is 0 or the empty string in addition to undef.

In reply to Re: Checking the value of an undefined value by pc88mxer
in thread Checking the value of an undefined value by Anonymous Monk

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