parallel-filter ( seq quot: ( elt -- ? ) -- newseq )
Concurrent combinators

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Vocabulary
concurrency.combinators

Inputs

seq	a sequence
quot	a quotation with stack effect ( elt -- ? )

Outputs

newseq

a sequence

Word description
Spawns a new thread for applying quot to every element of seq, collecting the elements for which the quotation yielded a true value.

Errors
Throws an error if one of the iterations throws an error.

Definition

USING: kernel sequences ;

IN: concurrency.combinators

: parallel-filter ( seq quot: ( elt -- ? ) -- newseq )
    over [ selector [ parallel-each ] dip ] dip like ; inline