blob: 5fa20ab3b5bae48575f7b5db24e0c28719f8a567 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include <boost/hana/eval.hpp>
#include <boost/hana/functional/placeholder.hpp>
#include <boost/hana/lazy.hpp>
#include <boost/hana/transform.hpp>
namespace hana = boost::hana;
using hana::_;
int main() {
static_assert(hana::eval(hana::transform(hana::make_lazy(4 / _)(1), _ * 3)) == (4 / 1) * 3, "");
hana::transform(hana::make_lazy(4 / _)(0), _ * 3); // never evaluated
}
|