Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical
 
PerlMonks  

Re: UNIVERSAL->cando , shortcut for testing and running methods?

by Rhandom (Curate)
on Mar 06, 2009 at 15:14 UTC ( #748884=note: print w/ replies, xml ) Need Help??


in reply to UNIVERSAL->cando , shortcut for testing and running methods?

Your examples aren't quite parallel. The first one working with hash assignment uses parallel operations. In the second example you pass a different argument to the second subroutine. If you can afford having real parallelism then there is another option available.

my $meth = $self->can('home') || $self->can('house') || confess(q{Can' +t determine home}); my $home = $self->$meth(1);
Which if you were insistent on having be one line could do
my $home = ($self->can('home') || $self->can('house') || confess(q{Can +'t determine home}))->($self, 1);
I think the first is more clear.

Yet another option is:
my $meth_name = (grep {$self->can($_)} qw(home house))[0] || confess(q +{Can't determine home}); my $home = $self->$meth_name(1);
However this last option is less optimal in readability and in efficiency.

my @a=qw(random brilliant braindead); print $a[rand(@a)];


Comment on Re: UNIVERSAL->cando , shortcut for testing and running methods?
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://748884]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others exploiting the Monastery: (9)
As of 2014-10-31 18:42 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    For retirement, I am banking on:










    Results (223 votes), past polls