Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change
 
PerlMonks  

Re^2: Get the length of a list.

by LanX (Canon)
on Jul 27, 2013 at 16:41 UTC ( #1046671=note: print w/ replies, xml ) Need Help??


in reply to Re: Get the length of a list.
in thread Get the length of a list.

Lists are not arrays!

see FAQ#What is the difference between a list and an array?

for instance the easiest way to know how many values a function or a grep returned is using a goatse:

DB<101> sub tst {a..z} DB<102> $length =()= tst() => 26 DB<107> grep { $_ % 2 } 1..10 => (1, 3, 5, 7, 9) DB<108> $n =()= grep { $_ % 2 } 1..10 => 5

Cheers Rolf

( addicted to the Perl Programming Language)


Comment on Re^2: Get the length of a list.
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1046671]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others wandering the Monastery: (9)
As of 2014-08-21 14:40 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The best computer themed movie is:











    Results (136 votes), past polls