Re: $^I
[email protected] ("Chas. Owens")
| Newsgroups | perl.beginners |
|---|---|
| Message-ID | <[email protected]> |
On May 11, 2008, at 18:04, Richard Lee wrote:
> I just looked it up on perldoc perlvar, but I am still not sure what
> it does.
>
>
>
> $^I The current value of the inplace-edit extension. Use
> "undef" to disable inplace editing. (Mnemonic: value of -i
> switch.)
>
> I was reading perl cookbook and saw this example, and was wondering
> what that is....
>
>
> if (@ARGV) {
> $^I = ".orig";
> } else {
> warn "$0: Reading from stdin\n" if -t STDIN;
> }
Setting $^I turns on in-place-editing*.
* http://perldoc.perl.org/perlrun.html#*-i*[_extension_]
--
Chas. Owens
wonkden.net
The most important skill a programmer can have is the ability to read.