HuaHuaY commented on code in PR #51118:
URL: https://github.com/apache/arrow/pull/51118#discussion_r3970034413
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cpp/src/arrow/csv/lexing_internal.h:
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@@ -35,6 +37,26 @@ class SpecializedOptions {
static constexpr bool escaping = Escaping;
};
+template <bool... CompiledBools, typename Fn, typename... Rest>
+decltype(auto) DispatchBool(Fn&& fn, Rest... rest)
+ requires requires {
Review Comment:
Yes. The first `requires` is a syntactic construct. The second `requires` is
a requires expression. We need the second `requires` when checking whether a
statement compiles, rather than when passing a concept.
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