all? ( ... seq quot: ( ... elt -- ... ? ) -- ... ? )
Factor handbook » The language » Collections » Sequence operations » Sequence combinators

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Vocabulary
sequences

Inputs

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

Outputs

?

a boolean

Word description
Tests if all elements in the sequence satisfy the predicate by checking each element in turn. Given an empty sequence, vacuously outputs t.

Definition

USING: math sequences.private ;

IN: sequences

: all? ( ... seq quot: ( ... elt -- ... ? ) -- ... ? )
    sequence-operator all-integers-from? ; inline