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);

[download]

Using it: 

$ 1.pl show World
Hello World!

[download]

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

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

[download]

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

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

In reply to Re: How do I call a sub using a variable as its name, objectively by choroba
in thread How do I call a sub using a variable as its name, objectively by misterperl

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.