# isPromise

A function which determines whether the object is a `Promise`.

## Arguments

1. `p` *(Any)*: The object to determine whether it is a promise.

## Returns

*(Boolean)*: `true` if the object is a `Promise` else `false`

## Example

```javascript
var isPromise = Rx.helpers.isPromise;

var p = RSVP.Promise(res => res(42));

console.log(isPromise(p));
// => true
```