Re^4: Cannot work on second file after reading first file.

I added the code you posted and the program ran the same as before.

I'm not sure how to set the $ENV{MYSCRIPT_DEBUG} to true. I tried adding the following line before your code, but I guess that's not it?

my $ENV{MYSCRIPT_DEBUG} = 1;
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Can you tell me how to set the variable to true?

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Re^5: Cannot work on second file after reading first file. by davido (Cardinal) on Feb 28, 2014 at 17:16 UTC
Your "environment" is the shell from which you run the script. If you're using bash, you would say, "`export MYSCRIPT_DEBUG=1`" on the command line, for example. Then run the script. On Windows, I think it's "`set MYSCRIPT_DEBUG 1`", or "`setx MYSCRIPT_DEBUG 1`". You could eliminate the "`if $ENV{MYSCRIPT_DEBUG};`" test altogether, but then you would have to remember to remove the line of code later on, once things are working as they should. This is just a convenient way to turn on and off debugging behavior without altering your code repeatedly (which provides opportunities for creating new bugs). Dave	[reply] [d/l] [select]

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Re^5: Cannot work on second file after reading first file.
by davido (Cardinal) on Feb 28, 2014 at 17:16 UTC

Your "environment" is the shell from which you run the script. If you're using bash, you would say, "export MYSCRIPT_DEBUG=1" on the command line, for example. Then run the script. On Windows, I think it's "set MYSCRIPT_DEBUG 1", or "setx MYSCRIPT_DEBUG 1".

You could eliminate the "if $ENV{MYSCRIPT_DEBUG};" test altogether, but then you would have to remember to remove the line of code later on, once things are working as they should. This is just a convenient way to turn on and off debugging behavior without altering your code repeatedly (which provides opportunities for creating new bugs).

Dave

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