SPUG: interpolating into a string variable

[Yitzchak Scott-Thoennes]

On Sat, Dec 20, 2003 at 09:50:43PM -0800, Fred Morris <m3047 at inwa.net> wrote:
> Let's say we have a string variable. In practice it's read in from a file,
> but it could be a constant. And what we want to do is force interpolation
> into it before we use it for something like... ooooh, a regex. So,
> something like this:
> 
> 
>     my $foo_str = 'foo';
> 
>     my $expr = 'a $foo_str happens here';
> 
>     my $interpolated_expr = something magic happens to $expr;
> 
> and then if you print "$interpolated_expr\n"; you would get
> 
>     a foo happens here
> 
> 
> Is there a way to do this? For some reason, I thought there was... thought
> I'd ask, because it's a Saturday night and the answer isn't materializing
> for me... dang.

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