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Re: How can one re-parse(?) a string to fill in variables

by kilinrax (Deacon)
on Nov 23, 2000 at 23:07 UTC ( #43154=note: print w/replies, xml ) Need Help??

in reply to How can one re-parse(?) a string to fill in variables

You're question is a little vague - but I'm guessing the problem is that you have code somewhat like the following (which i'll use as an example):
#!/usr/bin/perl -w use strict; my $name = 'Alex'; my $greeting = 'Hello $name!'; print $greeting;
Which you want to print 'Hello Alex', but currently it's printing 'Hello $name!'.

The following code will do this, though is perhaps a little hack-ish, and some of our more experienced monks could enlighten both of us as to a more elegant method:
#!/usr/bin/perl -w use strict; my $name = 'Alex'; my $greeting = 'Hello $name!'; $greeting =~ s|\$([\w_]+)|eval "\${$1}"|e; print $greeting;

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