Add ctor and assign() taking an iterator range to wxVector<>.

Do it for consistency with wxArray and std::vector<>, even if the current
implementation is suboptimal.

See #15216.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74045 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/vector.h

@@ -51,6 +51,19 @@ public:
      */
     wxVector(size_type size, const value_type& value);
 
+    /**
+        Constructor initializing the vector with the elements in the given
+        range.
+
+        The @a InputIterator template parameter must be an input iterator type.
+        This constructor adds all elements from @a first until, not not
+        including, @a last to the vector.
+
+        @since 2.9.5
+     */
+    template <class InputIterator>
+    wxVector(InputIterator first, InputIterator last);
+
     /**
         Copy constructor.
     */
@@ -70,6 +83,18 @@ public:
      */
     void assign(size_type n, const value_type& v);
 
+    /**
+        Assigns the elements in the given range to the vector.
+
+        The @a InputIterator template parameter must be an input iterator type.
+        This method clears the vector and then adds all elements from @a first
+        until, not not including, @a last to it.
+
+        @since 2.9.5
+     */
+    template <class InputIterator>
+    void assign(InputIterator first, InputIterator last);
+
     /**
         Returns item at position @a idx.
     */