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better implementation of event.hash()

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This commit is contained in:
Jörn-Michael Miehe 2022-09-15 00:25:31 +00:00
parent 825f2d166e
commit c58d707f49
1 changed files with 4 additions and 6 deletions
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10
ui/src/components/calendar/event.ts
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@ -18,13 +18,11 @@ export default class Event {
public get hash(): string {
const str = JSON.stringify(this);
// from https://gist.github.com/jlevy/c246006675becc446360a798e2b2d781
// source: https://gist.github.com/hyamamoto/fd435505d29ebfa3d9716fd2be8d42f0?permalink_comment_id=2775538#gistcomment-2775538
let hash = 0;
for (let i = 0; i < str.length; i++) {
const char = str.charCodeAt(i);
hash = (hash << 5) - hash + char;
hash &= hash; // Convert to 32bit integer
}
for (let i = 0; i < str.length; i++)
hash = Math.imul(31, hash) + str.charCodeAt(i) | 0;
return new Uint32Array([hash])[0].toString(36);
}
}