How to Alias Functions in C 11?

Aliasing Functions in C 11

While it's straightforward to alias classes using using statements, aliasing functions directly is not supported by default in C . However, there are ways to achieve this effectively.

Consider the following code:

<code class="cpp">namespace bar {
    void f();
}</code>

To alias this function, you can utilize perfect forwarding as follows:

<code class="cpp">template <typename... Args>
auto g(Args&&... args) -> decltype(f(std::forward<Args>(args)...)) {
  return f(std::forward<Args>(args)...);
}</code>

This solution works for aliasing any function, including overloaded and template functions. Essentially, the template function g forwards arguments to the original function f using perfect forwarding.

By doing this, you can effectively replace any usage of bar::f in your code with g, yielding functionally identical results. However, note that this approach does not define a new function with the name g but rather creates a generalized wrapper that invokes the original function.

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