Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW

Re^3: Sequential defined-or operators

by ikegami (Pope)
on Jan 14, 2008 at 12:18 UTC ( #662281=note: print w/ replies, xml ) Need Help??

in reply to Re^2: Sequential defined-or operators
in thread Sequential defined-or operators

Just be careful with precedence. Absent prototypes overriding the default,

my $value = $hash{$arg} // func $arg // 'default';
my $value = $hash{$arg} // func($arg // 'default');

Putting parens around the low precedence bit solves the problem.

my $value = $hash{$arg} // (func $arg) // 'default';

Of course, with functions, you can also do

my $value = $hash{$arg} // func($arg) // 'default';

Comment on Re^3: Sequential defined-or operators
Select or Download Code
Replies are listed 'Best First'.
Re^4: Sequential defined-or operators
by naikonta (Curate) on Jan 16, 2008 at 16:54 UTC
    Yes, I'm aware about this issue. I wrote related matter sometime ago. So I believe it will be perfectly fine to write:
    my $value = $hash{$key} // func $arg // 'default';
    knowing that func is a unary operator.

    Open source softwares? Share and enjoy. Make profit from them if you can. Yet, share and enjoy!

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://662281]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chilling in the Monastery: (6)
As of 2015-10-07 02:53 GMT
Find Nodes?
    Voting Booth?

    Does Humor Belong in Programming?

    Results (170 votes), past polls