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javascript/snippets/unary.md

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+---
+title: Unary function arity
+type: snippet
+tags: [function]
+cover: flower-portrait-2
+dateModified: 2020-10-22T20:24:44+03:00
+---
+
+Creates a function that accepts up to one argument, ignoring any additional arguments.
+
+- Call the provided function, `fn`, with just the first argument supplied.
+
+```js
+const unary = fn => val => fn(val);
+```
+
+```js
+['6', '8', '10'].map(unary(parseInt)); // [6, 8, 10]
+```