SeqAn3  3.0.2
The Modern C++ library for sequence analysis.
as_const.hpp
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1 // -----------------------------------------------------------------------------------------------------
2 // Copyright (c) 2006-2020, Knut Reinert & Freie Universität Berlin
3 // Copyright (c) 2016-2020, Knut Reinert & MPI für molekulare Genetik
4 // This file may be used, modified and/or redistributed under the terms of the 3-clause BSD-License
5 // shipped with this file and also available at: https://github.com/seqan/seqan3/blob/master/LICENSE.md
6 // -----------------------------------------------------------------------------------------------------
7 
13 #pragma once
14 
16 #include <seqan3/std/ranges>
17 
18 namespace seqan3::detail
19 {
20 
22 struct as_const_fn
23 {
25  template <typename t>
26  t operator()(t const && arg) const
27  {
28  return std::move(arg);
29  }
30 
32  template <typename t>
33  t const & operator()(t const & arg) const
34  {
35  return arg;
36  }
37 };
38 
39 } // namespace seqan3::detail
40 
41 namespace seqan3::views
42 {
43 
87 inline auto const as_const = std::views::transform(seqan3::detail::as_const_fn{});
89 
90 } // namespace seqan3::views
function.hpp
Provides various type traits for use on functions.
seqan3::views
The SeqAn namespace for views.
Definition: view_iota_simd.hpp:218
seqan3::views::as_const
auto const as_const
A view that provides only const & to elements of the underlying range.
Definition: as_const.hpp:87
seqan3::views::move
auto const move
A view that turns lvalue-references into rvalue-references.
Definition: move.hpp:68
ranges
Adaptations of concepts from the Ranges TS.
seqan3::pack_traits::transform
seqan3::type_list< trait_t< pack_t >... > transform
Apply a transformation trait to every type in the pack and return a seqan3::type_list of the results.
Definition: traits.hpp:307