From 04fd13fe427c39c71ef980ae13fdc58be53137bb Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Sun, 2 Jun 2019 11:09:58 +1000
Subject: [PATCH] array/parray: add resize function

---
 array/parray.hpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/array/parray.hpp b/array/parray.hpp
index a058fe2c..c468c4d4 100644
--- a/array/parray.hpp
+++ b/array/parray.hpp
@@ -8,6 +8,9 @@
 
 #pragma once
 
+#include "../debug/assert.hpp"
+#include "../cast.hpp"
+
 #include <algorithm>
 #include <iterator>
 #include <cstddef>
@@ -45,6 +48,16 @@ namespace cruft {
         parray (parray &&) noexcept = default;
         parray& operator= (parray &&) noexcept = default;
 
+        // Only allows shrinking currently.
+        void resize (SizeT count)
+        {
+            CHECK_LE (count, m_size);
+
+            for (auto cursor = count; cursor < m_size; ++cursor)
+                m_data[cursor].~DataT ();
+            m_size = count;
+        }
+
         DataT& operator[] (SizeT idx);
         const DataT& operator[] (SizeT idx) const;