The number of arguments it takes
Yeah that’s it.
Example :
function isPositive (a) {return a > 0}
function add (a,b) { return a + b}
arity of **isPositive **is 1
arity of **add **is 2
The number of arguments it takes
Yeah that’s it.
function isPositive (a) {return a > 0}
function add (a,b) { return a + b}
arity of **isPositive **is 1
arity of **add **is 2