lfilter ( list quot: ( elt -- ? ) -- result )
Lazy lists > Combinators for manipulating lazy lists

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Vocabulary
lists.lazy

Inputs and outputs
lista cons object
quota quotation with stack effect ( elt -- ? )
resultresulting cons object


Word description
Perform a similar functionality to that of the filter word, but in a lazy manner. No evaluation of the list elements occurs initially but a lazy-filter object is returned which conforms to the list protocol. Calling car, cdr or nil? on this will evaluate elements as required.

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

Definition