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tightened code for clampnumber

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clampNumber is now a single line function
This commit is contained in:
Xavey Aguarez
2017-12-27 01:55:32 -08:00
committed by GitHub
parent 083736d3fb
commit 5b9330d634
1 changed files with 3 additions and 6 deletions
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snippets/clampNumber.md
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@ -1,16 +1,13 @@
### clampNumber ### clampNumber
Clamps `num` within the inclusive `lower` and `upper` bounds. Clamps `num` within the inclusive range specified by the boundary values `a` and `b`
If `lower` is greater than `upper`, swap them.
If `num` falls within the range, return `num`. If `num` falls within the range, return `num`.
Otherwise, return the nearest number in the range. Otherwise, return the nearest number in the range.
```js ```js
const clampNumber = (num, lower, upper) => { const clampNumber = (num, a, b) => Math.max(Math.min(num, Math.max(a,b)),Math.min(a,b));
if (lower > upper) upper = [lower, lower = upper][0];
return (num >= lower && num <= upper) ? num : ((num < lower) ? lower : upper);
};
// clampNumber(2, 3, 5) -> 3 // clampNumber(2, 3, 5) -> 3
// clampNumber(1, -1, -5) -> -1 // clampNumber(1, -1, -5) -> -1
// clampNumber(3, 2, 4) -> 3 // clampNumber(3, 2, 4) -> 3