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

include/wx/vector.h

@@ -255,6 +255,13 @@ public:
         Copy(c);
     }
 
+    template <class InputIterator>
+    wxVector(InputIterator first, InputIterator last)
+        : m_size(0), m_capacity(0), m_values(NULL)
+    {
+        assign(first, last);
+    }
+
     ~wxVector()
     {
         clear();
@@ -268,6 +275,19 @@ public:
             push_back(v);
     }
 
+    template <class InputIterator>
+    void assign(InputIterator first, InputIterator last)
+    {
+        clear();
+
+        // Notice that it would be nice to call reserve() here but we can't do
+        // it for arbitrary input iterators, we should have a dispatch on
+        // iterator type and call it if possible.
+
+        for ( InputIterator it = first; it != last; ++it )
+            push_back(*it);
+    }
+
     void swap(wxVector& v)
     {
         wxSwap(m_size, v.m_size);