reflect: allow Len on String values.
It's probably just an oversight that it doesn't work,
perhaps caused by analogy with Cap.
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/4634125
diff --git a/src/pkg/reflect/value.go b/src/pkg/reflect/value.go
index 889d945..bfeb326 100644
--- a/src/pkg/reflect/value.go
+++ b/src/pkg/reflect/value.go
@@ -933,7 +933,7 @@
}
// Len returns v's length.
-// It panics if v's Kind is not Array, Chan, Map, or Slice.
+// It panics if v's Kind is not Array, Chan, Map, Slice, or String.
func (v Value) Len() int {
iv := v.internal()
switch iv.kind {
@@ -945,6 +945,8 @@
return int(maplen(iv.word))
case Slice:
return (*SliceHeader)(iv.addr).Len
+ case String:
+ return (*StringHeader)(iv.addr).Len
}
panic(&ValueError{"reflect.Value.Len", iv.kind})
}
