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doc: mention that reflect.SetMapIndex no longer panics 

when deleting from a nil map.  See issue 8051.

LGTM=r
R=golang-codereviews, r, khr
CC=golang-codereviews
https://golang.org/cl/96540051
This commit is contained in:
Keith Randall 2014-05-23 17:39:58 -07:00
parent 05cc78d8d3
commit 4b3019b17c
2 changed files with 7 additions and 0 deletions
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6
doc/go1.3.html
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@ -509,6 +509,12 @@ In particular, it only calls <a href="/pkg/os/exec/#LookPath"><code>LookPath</co
when the binary's file name contains no path separators. when the binary's file name contains no path separators.
</li> </li>
<li>
The <a href="/pkg/reflect/#Value.SetMapIndex"><code>SetMapIndex</code></a>
function in the <a href="/pkg/reflect/"><code>reflect</code></a> package
no longer panics when deleting from a <code>nil</code> map.
</li>
<li> <li>
If the main goroutine calls If the main goroutine calls
<a href="/pkg/runtime/#Goexit"><code>runtime.Goexit</code></a> <a href="/pkg/runtime/#Goexit"><code>runtime.Goexit</code></a>

1
src/pkg/reflect/value.go
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@ -1620,6 +1620,7 @@ func (v Value) SetCap(n int) {
// SetMapIndex sets the value associated with key in the map v to val. // SetMapIndex sets the value associated with key in the map v to val.
// It panics if v's Kind is not Map. // It panics if v's Kind is not Map.
// If val is the zero Value, SetMapIndex deletes the key from the map. // If val is the zero Value, SetMapIndex deletes the key from the map.
// Otherwise if v holds a nil map, SetMapIndex will panic.
// As in Go, key's value must be assignable to the map's key type, // As in Go, key's value must be assignable to the map's key type,
// and val's value must be assignable to the map's value type. // and val's value must be assignable to the map's value type.
func (v Value) SetMapIndex(key, val Value) { func (v Value) SetMapIndex(key, val Value) {