Voronovich:

I just had another amusing thought: Use a closure to hold your subroutine call with some of the arguments in place. It's a little more complicated, but if you've got multiple functions and/or sets of common arguments, I think it's a win::

$ cat closure_call.pl
#!/usr/bin/perl             
use strict;                 
use warnings;               
                            
#                           
# Stuff you already have in your program                           
#                           
my ($handle, $not_today, $thingie) 
=  qw($handle $not_today $thingie);
                            
sub printargs {             
    print "printargs(", join(", ", @_), ")\n";                     
}                           
                            
# Get a reference to a function with some of the args already in place
my $simple = simplificate(\&printargs, $handle, $not_today, $thingie);
my $simpl2 = simplificate(\&printargs, "tittle", "tattle");           
+              

# Function to build a reference with some arguments already in place
sub simplificate {          
    my ($rFn, @args) = @_;  
    return sub { &$rFn(@args, @_) };
}                           
                            
# Now call it as you need it                                          
+                
&$simple("Foo!", 234);      
&$simple("Frob!",23);       
&$simple("Forb!",54);       
&$simple("ooF!",11);        
&$simple("broF!", 'fakenum');      
&$simple("Frap!",458);      
  
&$simpl2("Whackmatic");
&$simpl2("Cybernicus");
&$simpl2("Canem Infernae");
                           
$ perl closure_call.pl
printargs($handle, $not_today, $thingie, Foo!, 234)
printargs($handle, $not_today, $thingie, Frob!, 23)
printargs($handle, $not_today, $thingie, Forb!, 54)
printargs($handle, $not_today, $thingie, ooF!, 11)
printargs($handle, $not_today, $thingie, broF!, fakenum)
printargs($handle, $not_today, $thingie, Frap!, 458)
printargs(tittle, tattle, Whackmatic)
printargs(tittle, tattle, Cybernicus)
printargs(tittle, tattle, Canem Infernae)

[download]

Update: Darn! BrowserUk beat me to the punch!

Update: Forgot to update code for simpl2.

...roboticus

When your only tool is a hammer, all problems look like your thumb.

In reply to Re: Simplifying repeated parameter lists by roboticus
in thread Simplifying repeated parameter lists by Voronich

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