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Re: Using form return value as subroutine name (updated x2)

by AnomalousMonk (Bishop)
on Jul 15, 2021 at 03:55 UTC ( #11135012=note: print w/replies, xml ) Need Help??


in reply to Using form return value as subroutine name

Generally speaking, a function dispatch table:

Win8 Strawberry 5.8.9.5 (32) Wed 07/14/2021 23:52:13 C:\@Work\Perl\monks >perl use strict; use warnings; my %func = ( foo => sub { print "fooble: @_ \n"; }, bar => sub { print "barble: @_ \n"; }, ); my $from_form = 'foo'; $func{$from_form}(42, 'zot'); ^Z fooble: 42 zot

Update 1: It's usually wise to check if the $from_form string actually exists in the %func dispatch table before trying to invoke it. :)

Update 2: In Perl as in life, there's usually more than one way to do something. Another way to do what you want is called "symbolic referencing", also known as a "soft reference". This technique is Officially Frowned Upon. See Why it's stupid to `use a variable as a variable name' and also the perlfaq7 FAQ How can I use a variable as a variable name?


Give a man a fish:  <%-{-{-{-<

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Re^2: Using form return value as subroutine name
by phirun (Novice) on Jul 15, 2021 at 03:59 UTC
    Thanks. Elegant indeed!

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