Functions
A function returns different values depending on its input. In Gren, a function will always return the same result if provided the same input.
sumOf first second =
first + second
sumOfFiveAndTwo =
sumOf 5 2
Here, sumOf
is the name of the function, while first
and second
are the inputs to the function. The return value of sumOf
, is the last computed expression. In this case, the only expression is first + second
, the result of which becomes the returned value.
Functions can take an arbitrary number of arguments, but must return exactly one value.