thing is, in practice it gets used as a type. If you repeat that function definition more than once you are creating a bit of a nightmare to maintain. For ins

thing is, in practice it gets used as a type. If you repeat that function definition more than once you are creating a bit of a nightmare to maintain. For instance if you need to add an extra parameter, you can easily find all usages. If something else uses the same definition, but is used for a different purpose, it gets much harder to distinguish the different usages. especially for a good ol void (callback)(void context) which a number of event's may use, and then later some may callback with more information which can be changed in once place and the compiler will quickly show you what breaks.