Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl-Sensitive Sunglasses
 
PerlMonks  

Re: eq vs. ==

by benn (Priest)
on Jul 20, 2003 at 12:24 UTC ( #276035=note: print w/ replies, xml ) Need Help??


in reply to eq vs. ==

Following on from adrianh, also consider...

print "==" if $a == ($b * $c);
and of course, the potential confusion with..
$a = "2.0"; print "eq" if $a eq "2"; # Nope print "==" if $a == 2; # Yup
Basically, not all equality comparisons are string-based. In my 'perl mindset', if $a == "2", where the number is quoted, immediately begs the question as to which type of comparison is wanted...
if $a eq "2" suggests that $a *generally* holds a non-numeric string...maybe part of something like foreach my $a (split(/\s+/,"my 1 markup 2 scheme where numbers 3 do 2 stuff")),whereas if $a == 2 suggests that $a *always* holds a number (and use warnings will then tell me if it doesn't for any reason).

Cheers, Ben


Comment on Re: eq vs. ==
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://276035]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others browsing the Monastery: (8)
As of 2015-07-08 06:37 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (94 votes), past polls