diff options
Diffstat (limited to 'src/boot/utility.boot')
| -rw-r--r-- | src/boot/utility.boot | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/boot/utility.boot b/src/boot/utility.boot index a7545688..8b1f242f 100644 --- a/src/boot/utility.boot +++ b/src/boot/utility.boot @@ -33,7 +33,7 @@ import initial_-env namespace BOOTTRAN module utility (objectMember?, symbolMember?, stringMember?, - charMember?, scalarMember?, listMember?, reverse, reverse!) + charMember?, scalarMember?, listMember?, reverse, reverse!, lastNode) --% membership operators @@ -106,3 +106,9 @@ reverse! l == l := l2 return l1 +--% return a pointer to the last cons-cell in the list `l'. + +lastNode l == + while l is [.,:l'] and cons? l' repeat + l := l' + l |