From 9c85ab7deb42c64dba0017f2f9fbc1d22b8977ad Mon Sep 17 00:00:00 2001
From: Denis Feklushkin <denis.feklushkin@gmail.com>
Date: Thu, 26 Oct 2017 22:00:51 +0700
Subject: [PATCH] child(int) works with const widget objects too

---
 src/dlangui/core/collections.d | 7 +------
 src/dlangui/widgets/widget.d   | 4 ++--
 2 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/src/dlangui/core/collections.d b/src/dlangui/core/collections.d
index 223508d4..23e9bef8 100644
--- a/src/dlangui/core/collections.d
+++ b/src/dlangui/core/collections.d
@@ -244,12 +244,7 @@ struct ObjectList(T) {
     @property int count() const { return _count; }
     alias length = count;
     /** get item by index */
-    T get(int index) {
-        assert(index >= 0 && index < _count, "child index out of range");
-        return _list[index];
-    }
-    /** get const item by index */
-    const(T) get(int index)  const {
+    inout(T) get(int index) inout {
         assert(index >= 0 && index < _count, "child index out of range");
         return _list[index];
     }
diff --git a/src/dlangui/widgets/widget.d b/src/dlangui/widgets/widget.d
index 8f2be7af..fd3a2f8d 100644
--- a/src/dlangui/widgets/widget.d
+++ b/src/dlangui/widgets/widget.d
@@ -1525,7 +1525,7 @@ public:
     /// returns number of children of this widget
     @property int childCount() { return 0; }
     /// returns child by index
-    Widget child(int index) { return null; }
+    inout(Widget) child(int index) inout { return null; }
     /// adds child, returns added item
     Widget addChild(Widget item) { assert(false, "addChild: children not suported for this widget type"); }
     /// adds child, returns added item
@@ -1741,7 +1741,7 @@ class WidgetGroup : Widget {
     /// returns number of children of this widget
     @property override int childCount() const { return _children.count; }
     /// returns child by index
-    override Widget child(int index) { return _children.get(index); }
+    override inout(Widget) child(int index) inout { return _children.get(index); }
     /// adds child, returns added item
     override Widget addChild(Widget item) { return _children.add(item).parent(this); }
     /// inserts child at given index, returns inserted item