first? ( ... seq quot: ( ... elt -- ... ? ) -- ... ? )

Vocabulary

sequences.extras

Inputs

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

Outputs

?

a boolean

Word description

Tests whether the first element of seq satisfies the provided predicate.

Definition

USING: kernel sequences ;

IN: sequences.extras

: first? ( ... seq quot: ( ... elt -- ... ? ) -- ... ? )
    [ first ] dip call ; inline