8ee50178f3
Correct: `Array.from()` (it’s a static method) Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method) This patch uses the common `#` syntax to denote `.prototype.`.
21 lines
440 B
Markdown
21 lines
440 B
Markdown
### sdbm
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Hashes the input string into a whole number.
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Use `String.prototype.split('')` and `Array.prototype.reduce()` to create a hash of the input string, utilizing bit shifting.
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```js
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const sdbm = str => {
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let arr = str.split('');
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return arr.reduce(
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(hashCode, currentVal) =>
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(hashCode = currentVal.charCodeAt(0) + (hashCode << 6) + (hashCode << 16) - hashCode),
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0
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);
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};
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```
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```js
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sdbm('name'); // -3521204949
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```
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