Re: Re: if-else vs. tertiary effieciency?

First of all, i'd write:print $var ? 'yes' : 'no' wouldnt this print yes or no depending on $var...it looks like the Anonymous Monk wants to print yes or no depending on whether $var has a value or not

 $var ? print 'yes' : print 'no'
[download]

seems right to me, am i missing something?

Update: I just started learning how ?: works, so i just wanted to know why

print $var ? 'yes' : 'no'
[download]

will also work, i guess im not understanding how it evaluates $var...the way im reading ?: is if 1st arg (print $var) then second (yes) else third(no) so how does it know that you actually want to print yes or no? with the way im looking at it, it is

if(print $var){
 'yes'
}else{
 'no'
}
[download]

anyone care to explain to me, id appreciate it greatly

Comment on Re: Re: if-else vs. tertiary effieciency? Select or Download Code

Replies are listed 'Best First'.
Re: Re: Re: if-else vs. tertiary effieciency? by rir (Vicar) on Sep 15, 2002 at 03:38 UTC
Think of it as: `print ( $boolean ? $true_value : $false_value );` [download] or in your terms: `print ( if($var}{ 'yes' }else{ 'no' } );` [download] I like this less because it is pseudo-code that looks much like code. So it seems to imply many things that aren't true. The conditional operator is only an operator not a statement.	[reply] [d/l] [select]
RE³: if-else vs. tertiary effieciency? by blaze (Friar) on Sep 15, 2002 at 05:31 UTC
so the print isnt part of the ?: in fruiture's example...if thats the case then it makes beautiful sense and i cant believe i didnt see it before, if thats not the case im a little more lost than i was to begin with :) ill be sure to ++ you when i get my next set of votes ;)	[reply]
Re^4: if-else vs. tertiary effieciency? by Aristotle (Chancellor) on Sep 15, 2002 at 07:43 UTC
If in doubt, deparse: `$ perl -MO=Deparse,-p -e'print $var ? "yes" : "no";' print(($var ? 'yes' : 'no')); -e syntax OK` [download] The ternary operator here has a higher precedence than the `print` that works as a list operator, so Perl does the right thing. Makeshifts last the longest.	[reply] [d/l]