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Fix default comparator for strings (#462)

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This commit is contained in:
Max Graey
2019-02-07 13:26:45 +02:00
committed by Daniel Wirtz
parent f551bc78e1
commit 41a89fa773
4 changed files with 371 additions and 439 deletions
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9
std/assembly/internal/sort.ts
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@ -36,8 +36,13 @@ export function COMPARATOR<T>(): (a: T, b: T) => i32 {
}
} else if (isString<T>()) {
return (a: T, b: T): i32 => {
var sa = <string>a, sb = <string>b;
return compareUnsafe(sa, 0, sb, 0, min(sa.length, sb.length));
if (a === b || a === null || b === null) return 0;
var alen = (<string>a).length;
var blen = (<string>b).length;
if (!alen && !blen) return 0;
if (!alen) return -1;
if (!blen) return 1;
return compareUnsafe(<string>a, 0, <string>b, 0, <usize>min(alen, blen));
};
} else {
return (a: T, b: T): i32 => (<i32>(a > b) - <i32>(a < b));