Elixir often refers to functions in the format
Module.function/arity. For example the
to_atom function in the
String module which takes one argument would be referred to as
String.to_atom/1 in the documentation. When a reference to a function is needed, we can use the function capture syntax, using the capture operator
&, as shown below to get a reference to a function.
The capture operator
& can also be used to create anonymous functions.
Documentation: Function Capturing