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-rw-r--r--include/mbgl/style/undefined.hpp12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/mbgl/style/undefined.hpp b/include/mbgl/style/undefined.hpp
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index 0000000000..e43f132a80
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+++ b/include/mbgl/style/undefined.hpp
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+#pragma once
+
+namespace mbgl {
+namespace style {
+
+class Undefined {};
+
+inline bool operator==(const Undefined&, const Undefined&) { return true; }
+inline bool operator!=(const Undefined&, const Undefined&) { return false; }
+
+} // namespace style
+} // namespace mbgl