Re: Regexes and /o

What version of perl are you using? In recent versions (5.6.0 and later I believe) the penalty for not using /o was greatly reduced.

So, /o isn't really much of a gain anymore because the worst case scenerio it was designed to avoid is no longer applicable.

-Blake

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(tye)Re: Regexes and /o by tye (Sage) on Oct 09, 2002 at 06:20 UTC
Yes! Precisely! And since you can use qr// for when you want maximum speed and maximum control, there is no reason to ever use /o. Ever! It should be deprecated from the language because the best it can do now is provide a slight speed boost (which you can still get by using qr// instead), but the worst it can do is break your code. Most of the times I see people use or recommend /o these days are cases where it makes absolutely no difference at all, or where it breaks their code. - tye (see also /o considered harmful)	[reply]

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(tye)Re: Regexes and /o
by tye (Sage) on Oct 09, 2002 at 06:20 UTC

Yes! Precisely! And since you can use qr// for when you want maximum speed and maximum control, there is no reason to ever use /o. Ever!

It should be deprecated from the language because the best it can do now is provide a slight speed boost (which you can still get by using qr// instead), but the worst it can do is break your code.

Most of the times I see people use or recommend /o these days are cases where it makes absolutely no difference at all, or where it breaks their code.

tye

/o considered harmful

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