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  1. use strict;
  2. use warnings;
  3. use feature qw(say);
  4.  
  5. use Time::Piece;
  6. use Time::Seconds;
  7.  
  8. my $fmt = '%Y-%m-%d';
  9.  
  10. say "Yesterday is ", ( localtime - ONE_DAY         )->strftime($fmt);
  11. say "Yesterday is ", ( +localtime - ONE_DAY        )->strftime($fmt);
  12. say "Yesterday is ", ( scalar(localtime) - ONE_DAY )->strftime($fmt);
  13. say "Yesterday is ", ( - ONE_DAY + localtime       )->strftime($fmt);
  14.  
Success #stdin #stdout 0.03s 4972KB
comments (?)
stdin 
Standard input is empty
stdout 
Yesterday is 1969-12-31
Yesterday is 1969-12-31
Yesterday is 2014-09-22
Yesterday is 2014-09-22
https://ideone.com/wPeS6J
language:
Perl (perl 5.28.1)
created:
9 years ago
visibility:
public

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