comment on

Possibly easy to maintain AND flexible parameters:

use strict;
use warnings;

sub my_func
{
  my %params;
  my $fix_dispatcher = {
     HASH   => sub{ %params = %{$_[0]}},
     ARRAY  => sub{ %params = @{$_[0]}},
     SCALAR => sub{ $params{message} = ${$_[0]}},
     _DIRECT_SCALAR=> sub{ $params{message} = $_[0]},
     _DIRECT_ARRAY => sub{ %params = @_},
  };
  
  my $param_type = scalar(@_)> 1 ? '_DIRECT_ARRAY'
                                 : ref $_[0] || '_DIRECT_SCALAR';
  $fix_dispatcher->{$param_type}->(@_);

  print "Message received: " . $params{message};
  if ($params{newline}) { print "\n" }
}

# good
my_func( { message => "Hello, world! (hashref)", newline=>1 } );  

# also good
my_func( message => "Hello, world! (hash)" ,newline=>1);
my_func( "Hello, world! (Scalar)" );             print("\n");  
my_func(\"Hello, world! (Scalar Ref)" );         print("\n");
my_func( "message" , "Hello, world! (array)", "newline",1 );    
my_func( ["message" , "Hello, world! (array ref)", "newline",1 ]);
[download]

UPDATE1: Added "array ref" call.
UPDATE2: Deleted unnecessary variable "$fix_subref".

"From there to here, from here to there, funny things are everywhere." -- Dr. Seuss

In reply to Re: Thoughts on "one function, flexible arguments"? by NetWallah
in thread Thoughts on "one function, flexible arguments"? by hornpipe2

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