find
find a value in a list
(list xs, function p) -> any
Tests each x in xs in order by passing them to predicate function p.
If p accepts a single argument, p(x) is evaluated. If p accepts two arguments, p(x, i) is evaluated, where i is the index of x in xs
Returns the first x for which p returns a value that casts to boolean true.
Returns nil if xs is nil or p is nil.
Returns nil if p does not return true for any x of xs.
Parameters
| Name | Type | Description |
|---|---|---|
xs |
list | The list to work with |
p |
function |
A predicate function of the form (any x, long i) -> boolean that returns true if item x at index i should be returned as found. |