$predicate
$class-description
$error-description
- } swap '[ , elements empty? not ] contains? ;
+ } swap '[ _ elements empty? not ] contains? ;
: check-values ( word element -- )
{
H{ } clone [
'[
dup >link where dup
- [ first , at , push-at ] [ 2drop ] if
+ [ first _ at _ push-at ] [ 2drop ] if
] each
] keep ;