foldl ( ... list identity quot: ( ... prev elt -- ... next ) -- ... result )
Factor handbook » The language » Collections » Lists » Combinators for lists

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Vocabulary
lists

Inputs

list	a list
identity	an object
quot	a quotation with stack effect ( ... prev elt -- ... next )

Outputs

result

the final result

Word description
Combines successive elements of the list (in a left-associative order) using a binary operation and outputs the final result.

See also
leach, lmap-lazy, ltake, lfilter, lappend-lazy, lfrom, lfrom-by, lconcat, lcartesian-product, lcartesian-product*, lcartesian-map, lcartesian-map*, lmerge, lwhile, luntil

Definition

USING: kernel ;

IN: lists

: foldl
    ( ... list identity quot: ( ... prev elt -- ... next ) -- ... result )
    swapd leach ; inline