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Merge pull request #1 from stoeffel/arity

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Arity
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hemanth.hm 2015-02-24 14:16:33 +05:30
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@ -7,7 +7,17 @@ __Let's try and define these with examples, this is a WIP please feel free to se
## Arity
---
> The number of arguments a function takes.
```js
const sum = (a, b) => a + b;
const arity = sum.length;
console.log(arity);
// => 2
// The arity of sum is 2
```
## Purity