The sequences.generalizations vocabulary defines generalized versions of various sequence operations.

narray ( n -- quot )

nsequence ( n exemplar -- quot )

firstn ( n -- quot )

set-firstn ( n -- quot )

nappend ( n -- seq )

nappend-as ( n exemplar -- seq )

Generalized Sequence combinators:

neach ( seq... quot n -- )

nmap ( seq... quot n -- result )

nmap-as ( seq... quot exemplar n -- result )

mnmap ( m*seq quot m n -- result*n )

mnmap-as ( m*seq quot n*exemplar m n -- result*n )

nproduce ( pred quot n -- seq... )

nproduce-as ( pred quot exemplar... n -- seq... )