util/ConstBuffer: add method Contains()

7213c267 · Max Kellermann · fa1fb47d · 7213c267
Commit 7213c267 authored Jun 23, 2014 by Max Kellermann
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ConstBuffer.hxx src/util/ConstBuffer.hxx +10 -0

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--- a/src/util/ConstBuffer.hxx
+++ b/src/util/ConstBuffer.hxx
@@ -138,6 +138,16 @@ struct ConstBuffer {
 		return size == 0;
 	}

+	template<typename U>
+	gcc_pure
+	bool Contains(U &&u) const {
+		for (const auto &i : *this)
+			if (u == i)
+				return true;
+
+		return false;
+	}
+
 	constexpr iterator begin() const {
 		return data;
 	}