17 lines
315 B
Markdown
17 lines
315 B
Markdown
---
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title: unary
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tags: function,beginner
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---
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Creates a function that accepts up to one argument, ignoring any additional arguments.
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Call the provided function, `fn`, with just the first argument given.
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```js
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const unary = fn => val => fn(val);
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```
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```js
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['6', '8', '10'].map(unary(parseInt)); // [6, 8, 10]
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```
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