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From: E Allen <allen.eric.m@gmail.com>
Newsgroups: comp.std.c++
Subject: Alias Templates as Template Template arguments
Date: Sun,  4 Mar 2012 14:24:15 -0800 (PST)
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Xref: csiph.com comp.std.c++:427

I saw some threads from prior to the final C++11 standard that seemed
to indicate that this would be legal. Now that things are finalized,
is the following, in fact, legal?

namespace MyLib {
template<typename T> class Normal_Traits { /* ... */ };

template<typename T, typename Traits = Normal_Traits<T>>
class Nifty_New_Container { /* ... */ };

template<template<typename> Con> class Widget { Con<int> ci; Con<void*> cp;
 /* ... use ci and cp in member functions */ };
}

template<typename T> using Adapter = MyLib::Nifty_New_Container<T>;

void foo() {
Widget<Adapter> w;
// use w
}


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