From 831b02c9072bc7f40026b23aa97825825a9bc0be Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Sun, 12 May 2019 14:34:53 +1000
Subject: [PATCH] random: add an explicit generator parameter for container
 choice

---
 random.hpp | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/random.hpp b/random.hpp
index fe5d8db6..c5decdac 100644
--- a/random.hpp
+++ b/random.hpp
@@ -158,18 +158,28 @@ namespace cruft::random {
 
 
     //-------------------------------------------------------------------------
-    template <typename ContainerT>
+    template <typename ContainerT, typename GeneratorT>
     auto
-    choose (ContainerT &data)
+    choose (ContainerT &data, GeneratorT &&gen)
     {
         if (data.empty ())
             return data.end ();
 
         auto const offset = uniform (
             typename ContainerT::size_type {0},
-            data.size () - 1
+            data.size () - 1,
+            gen
         );
 
         return std::next (data.begin (), offset);
     }
+
+
+    //-------------------------------------------------------------------------
+    template <typename ContainerT>
+    auto
+    choose (ContainerT &data)
+    {
+        return choose (data, generator ());
+    }
 }