cppin/has_find.hpp at master · mateka/cppin · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
#pragma once

#include <type_traits>
#include <map>
#include <unordered_map>

namespace mad {
namespace cppin {

// Has a template for collection member function find?
template<template<typename...> class TCollection>
struct template_has_member_find : std::false_type {};

template<>
struct template_has_member_find<std::set> : std::true_type {};

template<>
struct template_has_member_find<std::multiset> : std::true_type {};

template<>
struct template_has_member_find<std::map> : std::true_type {};

template<>
struct template_has_member_find<std::multimap> : std::true_type {};

template<>
struct template_has_member_find<std::unordered_set> : std::true_type {};

template<>
struct template_has_member_find<std::unordered_multiset> : std::true_type {};

template<>
struct template_has_member_find<std::unordered_map> : std::true_type {};

template<>
struct template_has_member_find<std::unordered_multimap> : std::true_type {};


// Has a concrete type member function find?
template<typename Collection, typename... Args>
struct has_member_find : public std::false_type {};

template<template<typename...> class Collection, typename... Args>
struct has_member_find<Collection<Args...>> : template_has_member_find <Collection> {};


}	// cppin
}	// mad