Kebab file names

snippets/in-range.md

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+---
+title: Number in range
+tags: math
+cover: armchair
+firstSeen: 2017-12-20T18:33:58+02:00
+lastUpdated: 2020-11-01T20:50:57+02:00
+---
+
+Checks if the given number falls within the given range.
+
+- Use arithmetic comparison to check if the given number is in the specified range.
+- If the second argument, `end`, is not specified, the range is considered to be from `0` to `start`.
+
+```js
+const inRange = (n, start, end = null) => {
+  if (end && start > end) [end, start] = [start, end];
+  return end == null ? n >= 0 && n < start : n >= start && n < end;
+};
+```
+
+```js
+inRange(3, 2, 5); // true
+inRange(3, 4); // true
+inRange(2, 3, 5); // false
+inRange(3, 2); // false
+```