complement

Complement
====

A stand-alone version of the common 'complement' or 'not' found in functional libraries

``javascript
var complement = require('./index');

function isDog (string) {
return string === 'dog'
}

var isNotDog = complement(isDog);

assert(isDog('dog'));
assert(isNotDog('cat'));
assert(isNotDog('dog') === false);
`

Related
---

- Underscore contrib's complement
- Lemonad's not

FAQ
---

Q: Why even is this a module?

a. I wanted to play around with tweaking my publishing process and this was a great excuse to publish something
b. I wanted this without bringing in a library
c. I hate util.js` files littered with things that can be found elsewhere