From 95dab16e6e7cb3684f4b61daec587e94f749ad62 Mon Sep 17 00:00:00 2001
From: James Shubin <james@shubin.ca>
Date: Thu, 28 Feb 2019 08:54:11 -0500
Subject: [PATCH] lang: funcs: Allow the len function to determine str length

---
 lang/funcs/core/len_func.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lang/funcs/core/len_func.go b/lang/funcs/core/len_func.go
index 16f43be7..641c7137 100644
--- a/lang/funcs/core/len_func.go
+++ b/lang/funcs/core/len_func.go
@@ -26,6 +26,10 @@ import (
 
 func init() {
 	simplepoly.Register("len", []*types.FuncValue{
+		{
+			T: types.NewType("func(str) int"),
+			V: Len,
+		},
 		{
 			T: types.NewType("func([]variant) int"),
 			V: Len,
@@ -43,6 +47,8 @@ func init() {
 func Len(input []types.Value) (types.Value, error) {
 	var length int
 	switch k := input[0].Type().Kind; k {
+	case types.KindStr:
+		length = len(input[0].Str())
 	case types.KindList:
 		length = len(input[0].List())
 	case types.KindMap: