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Move has_formatter into the public fmt namespace. (#1407)

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* Move has_formatter into the public fmt namespace.

This will allow users to do SFINAE-friendly checks for
the formattability of a type.

Fixes #1369
This commit is contained in:
David P. Sicilia
2019-11-14 07:08:24 -08:00
committed by Victor Zverovich
parent 52ae134f84
commit 2145a7bdcc
3 changed files with 8 additions and 8 deletions
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test/core-test.cc
+4 -4
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@@ -453,11 +453,11 @@ template <> struct formatter<enabled_formatter> {
FMT_END_NAMESPACE
TEST(CoreTest, HasFormatter) {
using fmt::internal::has_formatter;
using fmt::has_formatter;
using context = fmt::format_context;
EXPECT_TRUE((has_formatter<enabled_formatter, context>::value));
EXPECT_FALSE((has_formatter<disabled_formatter, context>::value));
EXPECT_FALSE((has_formatter<disabled_formatter_convertible, context>::value));
static_assert(has_formatter<enabled_formatter, context>::value, "");
static_assert(!has_formatter<disabled_formatter, context>::value, "");
static_assert(!has_formatter<disabled_formatter_convertible, context>::value, "");
}
struct convertible_to_int {