[LA.pm] Double versus single quotes

[Douglas Wilson]

From: "John W. Palmieri" <john at mediaOnFire.com>

> 
> When I'm using strings in Perl I try to use single quotes 
> for static strings (e.g., 'This string is static') since I 

> Also, when building an output string I'll tend to use long 
> static strings followed by the dot (.) concatenator for 
> inserting variables using the same reasoning. I'm asking 
> this question since I've come around that this may not be 
> the most efficient since with every concatenation it may 
> have to do exec a bunch of constructors and copies?

Run your script through B::Deparse like this:
perl -MO=Deparse,-q script_name_here

You'll see that double quoted strings containing nothing
but constants are just interpreted as single quoted
strings anyway, and double quoted strings containing
variables are interpreted as '.' concatenated strings.

HTH,
Doug

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