Re: Get the length of a list.

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Re^2: Get the length of a list. by LanX (Saint) on Jul 27, 2013 at 16:41 UTC
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` [download] Cheers Rolf ( addicted to the Perl Programming Language)	[reply] [d/l] [select]

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Re^2: Get the length of a list.
by LanX (Saint) on Jul 27, 2013 at 16:41 UTC

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
[download]

Cheers Rolf

( addicted to the Perl Programming Language)

[reply]
[d/l]
[select]