1 files changed, 4 insertions, 4 deletions

diff --git a/chunk.d b/chunk.d
index e24e3ab..47a2d7e 100644
--- a/chunk.d
+++ b/chunk.d
@@ -46,7 +46,6 @@ abstract class Seq {
     abstract Value first();
     abstract Seq rest();
     abstract int length();
-    abstract Seq concat(Seq seq);
     abstract bool isIn(Value val);
 }
 
@@ -75,7 +74,7 @@ class String : Seq {
         return to!int(str.length);
     }
 
-    override Seq concat(Seq seq) {
+    Seq concat(Seq seq) {
         if (seq.type != SeqType.STRING) {
             // how do i throw an error here?
             writeln("must concat strings to strings!");
@@ -138,13 +137,13 @@ class List : Seq {
         return to!int(this.inner.length);
     }
 
-    override Seq concat(Seq seq) {
+    Seq append(Value val) {
         int length = to!int(this.inner.length);
         List ret = new List(length + 1);
         for (int i = 0; i < length; i++) {
             ret.addItemAtIndex(this.inner[i], i);
         }
-        ret.addItemAtIndex(makeSeqValue(seq), length);
+        ret.addItemAtIndex(val, length);
         return ret;
     }
 
@@ -189,6 +188,7 @@ enum OpCode {
 
     // SEQUENCES
     OP_CONCAT,  // No?
+    OP_APPEND,
     OP_FIRST,   // No?
     OP_LENGTH,
     OP_MEMBER,