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Rocky Bernstein > Devel-Trepan-0.44 > Devel::Trepan::CmdProcessor::Command::Display



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Source   Latest Release: Devel-Trepan-0.74

${NAME} Perl-expression

Print value of expression Perl-expression each time the program stops.


 ${NAME} \$a  # Display variable \$a each time we enter debugger
 ${NAME} join(', ', \@ARGV)  # show values of array \@ARGV

If what you want to do is evaluate a Perl expression or statement once rather than every time the program stops, see eval.

See also undisplay, enable, disable.

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