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Re: How do I call a sub using a variable as its name, objectively

by choroba (Cardinal)
on Oct 28, 2024 at 19:20 UTC ( [id://11162456]=note: print w/replies, xml ) Need Help??


in reply to How do I call a sub using a variable as its name, objectively

It's in fact much easier. Use a variable to keep the method name:
#!/usr/bin/perl use warnings; use strict; { package My; sub new { bless {}, shift } sub show { my ($self, $name) = @_; print "Hello $name!\n" } } my $A = 'My'->new; my $method = shift; $A->$method(@ARGV);

Using it:

$ 1.pl show World Hello World!

Otherwise, you need to do a reference/dereference trick:

$A->${\ $ARGV[0] }(@ARGV[1 .. $#ARGV]);

Update: Fixed arguments for the second example. Thaks etj.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

Replies are listed 'Best First'.
Re^2: How do I call a sub using a variable as its name, objectively
by etj (Priest) on Oct 29, 2024 at 14:48 UTC
    To be exactly equivalent, that last one would need to be: $A->${\ $ARGV[0] }(@ARGV[1..$#ARGV]);

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