Re: Re-Interpolating a Scalar (a string)


laziness, impatience, and hubris
	PerlMonks

by Nichodemus (Initiate)

on Jul 29, 2005 at 18:28 UTC ( [id://479502]=note: print w/replies, xml )

Need Help??

Alright -- I am sorry to waste your time -- I have already figured it out!

$raw = '$parsed = "fred has $color eyes";';

eval $raw;

print $parsed;
[download]

Sorry for the false alarm. :)

-Nich

Comment on Re: Re-Interpolating a Scalar (a string) Download Code

Replies are listed 'Best First'.
Re^2: Re-Interpolating a Scalar (a string) by friedo (Prior) on Jul 29, 2005 at 18:34 UTC
While this will work fine, it's probably not a good idea. Especially if you don't know ahead of time what's going to be in `$raw`, any malicious code that gets put there will be `eval`ed by your program. Further, string eval is quite slow from what I hear. Instead, I would highly reccomend using the hash lookup method provided by cmeyer above.	[reply]
Re^2: Re-Interpolating a Scalar (a string) by Joost (Canon) on Jul 29, 2005 at 18:33 UTC
Unless you can guarantee that $color is always a string without meta characters, this is safer: `$raw = '$parsed = "fred has \Q$color\E eyes";'; eval $raw; print $parsed;` [download] "What should it profit a man, if he should win a flame war, yet lose his cool?"	[reply] [d/l]

Domain Nodelet^?

Node Status^?

node history
Node Type: note [id://479502]
help

Chatterbox^?

How do I use this? • Last hour • Other CB clients

Other Users^?

Others having a coffee break in the Monastery: (5)

As of 2024-04-19 03:10 GMT

Sections^?

Information^?

Find Nodes^?

Leftovers^?

Voting Booth^?

No recent polls found