Created
May 6, 2017 08:05
Cheap hash for javascript
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| export default (s)=> { | |
| let hash = 0 | |
| let strlen = s.length | |
| if ( strlen === 0 ) { | |
| return hash; | |
| } | |
| for (let i = 0; i < strlen; i++) { | |
| let c = s.charCodeAt(i) | |
| hash = ((hash << 5) - hash) + c | |
| hash = hash & hash | |
| } | |
| return hash | |
| } |
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