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-rw-r--r--src/lib/List.rs11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/lib/List.rs b/src/lib/List.rs
index 58ea29f2..6d7748f0 100644
--- a/src/lib/List.rs
+++ b/src/lib/List.rs
@@ -56,6 +56,17 @@ fn length[T](&list[T] ls) -> uint {
ret foldl[T,uint](ls, 0u, bind count[T](_, _));
}
+fn cdr[T](&list[T] ls) -> list[T] {
+ alt (ls) {
+ case (cons[T](_, ?tl)) {ret *tl;}
+ }
+}
+fn car[T](&list[T] ls) -> T {
+ alt (ls) {
+ case (cons[T](?hd, _)) {ret hd;}
+ }
+}
+
// Local Variables:
// mode: rust;
// fill-column: 78;