Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"

Re: Confused by Perl ternary operator

by fruiture (Curate)
on Aug 23, 2004 at 19:25 UTC ( #385190=note: print w/replies, xml ) Need Help??

in reply to Confused by Perl ternary operator

Operator Precedence, again.

A ? B = C : D = E # resolves ( A ? ( B = C ) : D ) = E

So, no matter what A evaluates to, E is being assigned, either to "B = C" (which is the same as assigning to B) or D. In your case B and D are identical, so your ?: operator doesn't do anything useful. Solution:

@_ ? ( $param2 = shift ) : ( $param2 = "Shift" ); # and while we're at it, of course, refactor that $param2 = @_ ? shift : "Shift"

The last line demonstrates why the precedence of "?:" vs. "=" is actually sensible. HTH


Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://385190]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (2)
As of 2018-08-18 02:27 GMT
Find Nodes?
    Voting Booth?
    Asked to put a square peg in a round hole, I would:

    Results (184 votes). Check out past polls.