Re: eval (was: Embperl 2.0b7 approx. 10 times slower than 1.3.x)

[Gerald Richter <ri...@ecos.de>]

> >
> > 1. I'm unsure whether it's good to use eval around so much code... is
> > it the most efficient method?  You could wrap it just around the
> > ->prepare and ->execute. Actually, you don't eval at all. The critical
> > DBI method calls return true or false, which you can catch:
> >

There are two ways to use eval:

a.) eval "foo"

This compiles the string "foo" every time and executes it. This is for
"selfwriting programms". Since it is compiled every time, it is slower

b.) eval { foo }

This compiles foo only once, like any other Perl code. This is only for
catching expections (thrown via die). This executes at the same speed as
normal Perl code and it doesn't matter how large { foo } is

Gerald

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