mp/function_info: Add parameter_count_v

2020-04-02 12:51:47 +01:00 · 2020-04-02 12:51:47 +01:00 · 607dd2c95e
commit 607dd2c95e
parent 3315faf592
1 changed files with 8 additions and 0 deletions
--- a/src/common/mp/function_info.h
+++ b/src/common/mp/function_info.h
@ -58,6 +58,14 @@ struct FunctionInfo<R(C::*)(Args...) const> : public FunctionInfo<R(Args...)>
    using class_type = C;
 };

+/**
+ * Helper template for retrieving the number of function parameters.
+ *
+ * @tparam Function       An arbitrary function type.
+ */
+template <typename Function>
+constexpr size_t parameter_count_v = FunctionInfo<Function>::args_count;
+
 /**
 * Helper template for retrieving the type of a function parameter.
 *