Add format_arg::operator bool

48fe9783 · Victor Zverovich · 119a63ab · 48fe9783
Commit 48fe9783 authored Oct 02, 2016 by Victor Zverovich
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fmt/format.h fmt/format.h +2 -0

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--- a/fmt/format.h
+++ b/fmt/format.h
@@ -1031,6 +1031,8 @@ struct Value {
 // allow storage in internal::MemoryBuffer.
 struct format_arg : internal::Value {
  Type type;
+
+  explicit operator bool() const noexcept { return type != NONE; }
 };

 namespace internal {