llength ( list -- n )
Factor handbook » The language » Collections » Lists » Manipulating lists
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Vocabulary
lists

Inputs
lista list


Outputs
na non-negative integer


Word description
Outputs the length of the list. This should not be called on an infinite list.

See also
lnth, cons, car, cdr

Definition
USING: kernel math ;

IN: lists

: llength ( list -- n ) 0 [ drop 1 + ] foldl ;