Re: Executing line number


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Re: Executing line number

by ELISHEVA (Prior)

on Sep 09, 2009 at 14:33 UTC ( [id://794369]=note: print w/replies, xml )

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in reply to Executing line number

One possibility:

print STDERR 'file: ' . __FILE__ . ', line: ' . __LINE__ . "\n";
[download]

In case you are wondering about all the concatenation, you can't use __FILE__ and __LINE__ inside double quotes. __FILE__ and __LINE are "special literals" and they lose their specialness inside double quotes. To learn more about __FILE__ and __LINE, look at perldata and search for the phrase "Special Literals".

Best, beth

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Re^2: Executing line number by Burak (Chaplain) on Sep 09, 2009 at 22:36 UTC
I think printf() is more clear in such a situation :) `printf STDERR "file: %s, line: %s\n", __FILE__, __LINE__;` [download]	[reply] [d/l]
Re^2: Executing line number by johngg (Canon) on Sep 09, 2009 at 22:32 UTC
You can use the babycart operator to interpolate bits of code into a double-quoted string, not that it saves much, if any, typing or looks any clearer. `warn "file: @{ [ __FILE__ ] } line: @{ [ __LINE__ ] } - oops\n";` [download] I hope this is of interest. Cheers, JohnGG	[reply] [d/l]
Re^3: Executing line number by Burak (Chaplain) on Sep 09, 2009 at 22:37 UTC
I think that anyone using this idiom must be punished :p	[reply]

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