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  1. #!/usr/bin/perl
  2. use strict;
  3. use warnings;
  4. my %hash = ( LEVEL_1_KEY => {
  5. 	                    LEVEL_2_KEY => "myval"
  6. 						}
  7. 		   );
  8.  
  9. if (defined $hash{LEVEL_1_KEY}{LEVEL_2_KEY}){
  10. print "Inside the if block\n";
  11. }
  12.  
  13. #Now with var
  14. my $var = "LEVEL_1_KEY";
  15. if (defined $hash{$var}{LEVEL_2_KEY}){
  16. print "Inside the if block again";
  17. }
Success #stdin #stdout 0s 3740KB
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Standard input is empty
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Inside the if block
Inside the if block again
https://ideone.com/QT36e4
language:
Perl (perl 5.28.1)
created:
10 years ago
visibility:
public

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