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# Module - "enum"
```golang
enum := import("enum")
```
## Functions
- `all(x, fn) => bool`: returns true if the given function `fn` evaluates to a
truthy value on all of the items in `x`. It returns undefined if `x` is not
enumerable.
- `any(x, fn) => bool`: returns true if the given function `fn` evaluates to a
truthy value on any of the items in `x`. It returns undefined if `x` is not
enumerable.
- `chunk(x, size) => [object]`: returns an array of elements split into groups
the length of size. If `x` can't be split evenly, the final chunk will be the
remaining elements. It returns undefined if `x` is not array.
- `at(x, key) => object`: returns an element at the given index (if `x` is
array) or key (if `x` is map). It returns undefined if `x` is not enumerable.
- `each(x, fn)`: iterates over elements of `x` and invokes `fn` for each
element. `fn` is invoked with two arguments: `key` and `value`. `key` is an
int index if `x` is array. `key` is a string key if `x` is map. It does not
iterate and returns undefined if `x` is not enumerable.`
- `filter(x, fn) => [object]`: iterates over elements of `x`, returning an
array of all elements `fn` returns truthy for. `fn` is invoked with two
arguments: `key` and `value`. `key` is an int index if `x` is array. It returns
undefined if `x` is not array.
- `find(x, fn) => object`: iterates over elements of `x`, returning value of
the first element `fn` returns truthy for. `fn` is invoked with two
arguments: `key` and `value`. `key` is an int index if `x` is array. `key` is
a string key if `x` is map. It returns undefined if `x` is not enumerable.
- `find_key(x, fn) => int/string`: iterates over elements of `x`, returning key
or index of the first element `fn` returns truthy for. `fn` is invoked with
two arguments: `key` and `value`. `key` is an int index if `x` is array.
`key` is a string key if `x` is map. It returns undefined if `x` is not
enumerable.
- `map(x, fn) => [object]`: creates an array of values by running each element
in `x` through `fn`. `fn` is invoked with two arguments: `key` and `value`.
`key` is an int index if `x` is array. `key` is a string key if `x` is map.
It returns undefined if `x` is not enumerable.
- `key(k, _) => object`: returns the first argument.
- `value(_, v) => object`: returns the second argument.
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