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122
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1 import Immutable from "immutable";
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2
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3 export function addToValues<K, V>(
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4 imap: Immutable.Map<K, V[]>,
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5 key: K,
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6 newValue: V): Immutable.Map<K, V[]> {
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7 let cur = imap.get(key, undefined);
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8 let ret = imap;
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9 if (cur === undefined) {
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10 cur = [];
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11 ret = imap.set(key, cur);
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12 }
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13 cur.push(newValue);
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14 return ret;
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15 }
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16
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17 export function multiColumnSort<T>(
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18 elems: T[],
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19 makeSortCols: (elem: T, index: number) => Array<number | string>): T[] {
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20 const tagged = elems.map((p, i) => {
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21 return {
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22 sort: makeSortCols(p, i),
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23 val: p
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24 };
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25 });
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26 tagged.sort((e1, e2) => {
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27 let index = 0;
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28 for (let k1 of e1.sort) {
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29 const k2 = e2.sort[index];
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30 if (!Immutable.is(k1, k2)) {
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31 if (typeof k1 === "number") {
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32 if (typeof k2 === "number") {
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33 return k1 - k2;
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34 } else {
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35 throw new Error(`${k1} vs ${k2}`);
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36 }
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37 } else {
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38 return k1.localeCompare(k2 as string);
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39 }
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40 }
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41 index++;
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42 }
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43 return 0;
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44 });
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45 return tagged.map((e) => e.val);
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46 }
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