nth-next ( i str -- str[i-1] str[i] )

Vocabulary

unicode.private

Inputs

i	an object
str	an object

Outputs

str[i-1]	an object
str[i]	an object

Definition

USING: kernel math sequences ;

IN: unicode.private

: nth-next ( i str -- str[i-1] str[i] )
    [ [ 1 - ] keep ] dip [ nth ] curry bi@ ;