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Support std::ostream formatter in ranges

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jl 2020-10-17 22:51:22 +02:00
parent 20d4f2e836
commit 3dbbd613c2
1 changed files with 4 additions and 1 deletions
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5
include/fmt/ranges.h
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@ -330,7 +330,10 @@ struct formatter<tuple_arg_join<Char, T...>, Char> {
typename FormatContext::iterator format_args(
const tuple_arg_join<Char, T...>& value, FormatContext& ctx,
const Arg& arg, const Args&... args) {
using base = formatter<typename std::decay<Arg>::type, Char>;
using arg_type = typename std::decay<Arg>::type;
using base = conditional_t<has_formatter<arg_type, FormatContext>::value, formatter<arg_type, Char>, detail::fallback_formatter<arg_type, Char>>;
auto out = ctx.out();
out = base{}.format(arg, ctx);
if (sizeof...(Args) > 0) {