Javascript to Elm

bit of history Macros can be used to make tasks less repetitive by representing a complicated sequence of keystrokes, mouse movements, commands, or other types of input. In computer programming, macros are a tool that allows a developer to re-use code. best explianation i have found so far Fundamentally, macros are a way of writing code that writes other code, which is known as metaprogramming. rust docs macro is going to happen at compile time. where a function is going to happen at run time. code that writes code.