You can try:
if ( exists ( $spec_hash{$exch}{$symbol} ) and $spec_hash{$exch}{$symbol} != 1 ) {
or
if ( ($spec_hash{$exch}{$symbol}//0) != 1 ) {
depending on how you want to handle the non-existing hash item.

Arnon Weinberg
Back2Front - The Web Site People

In reply to Re: Use of uninitialized value by thewebsi
in thread Use of uninitialized value by MrTEE

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