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Specialize is_char for character types

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Victor Zverovich
2019-06-04 17:08:58 -07:00
parent 7893d85394
commit 064ce6b6c0
2 changed files with 6 additions and 1 deletions
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include/fmt/core.h
+5 -1
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@@ -443,7 +443,11 @@ using string_view = basic_string_view<char>;
using wstring_view = basic_string_view<wchar_t>;
/** Specifies if ``T`` is a character type. Can be specialized by users. */
template <typename T> struct is_char : std::is_integral<T> {};
template <typename T> struct is_char : std::false_type {};
template <> struct is_char<char> : std::true_type {};
template <> struct is_char<wchar_t> : std::true_type {};
template <> struct is_char<char16_t> : std::true_type {};
template <> struct is_char<char32_t> : std::true_type {};
/**
\rst