Re^4: Executing a string as a Perl command

Depends. If the variable contains a short string, then the slow down will be negligible. If it contains a number and the subroutine needs to do some more computations, then you've just forced perl to convert the number to a string and back. If nothing more, it's wasteful.

Then there is yet another case. What if the variable contains a huge string? You've just made yet another copy ...

Jenda
Enoch was right!
Enjoy the last years of Rome.

Comment on Re^4: Executing a string as a Perl command

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Re^5: Executing a string as a Perl command by petdance (Parson) on May 13, 2011 at 22:08 UTC
If it contains a number and the subroutine needs to do some more computations, then you've just forced perl to convert the number to a string and back. Which is still negligible, especially when one is about to spawn another process. xoxo, Andy	[reply]