20 lines
429 B
Markdown
20 lines
429 B
Markdown
---
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title: Binary function arity
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tags: function
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expertise: intermediate
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firstSeen: 2020-05-13T13:36:36+03:00
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lastUpdated: 2020-10-18T23:04:45+03:00
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---
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Creates a function that accepts up to two arguments, ignoring any additional arguments.
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- Call the provided function, `fn`, with the first two arguments given.
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```js
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const binary = fn => (a, b) => fn(a, b);
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```
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```js
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['2', '1', '0'].map(binary(Math.max)); // [2, 1, 2]
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```
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