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Specialize is_char for character types

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This commit is contained in:
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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6
include/fmt/core.h
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@ -443,7 +443,11 @@ using string_view = basic_string_view<char>;
using wstring_view = basic_string_view<wchar_t>; using wstring_view = basic_string_view<wchar_t>;
/** Specifies if ``T`` is a character type. Can be specialized by users. */ /** 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 \rst

1
include/fmt/format.h
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@ -400,6 +400,7 @@ void buffer<T>::append(const U* begin, const U* end) {
// A UTF-8 code unit type. // A UTF-8 code unit type.
enum char8_t : unsigned char {}; enum char8_t : unsigned char {};
#endif #endif
template <> struct is_char<char8_t> : std::true_type {};
// A UTF-8 string view. // A UTF-8 string view.
class u8string_view : public basic_string_view<char8_t> { class u8string_view : public basic_string_view<char8_t> {