43 lines
702 B
JavaScript
43 lines
702 B
JavaScript
import of from UnitJS.Fun;
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import {compare, of, proj} from UnitJS.Fun;
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function Table(itemMaker, sortCriterion) {
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var items = {};
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return {
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get: get,
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getAll: getAll,
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insert: insert,
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insertAll: insertAll,
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remove: remove
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};
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function get(key) {
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return items[key];
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}
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function getAll(criterion) {
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return Object.keys(items)
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.map(of(items))
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.filter(criterion || function() {return true;})
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.sort(compare(proj(sortCriterion)));
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}
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function insert(key, value) {
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items[key] = itemMaker(key, value);
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}
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function insertAll(newItems) {
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for(var key in newItems) {
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insert(key, newItems[key]);
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}
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}
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function remove(key) {
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delete items[key];
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}
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}
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return {
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make: Table
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}
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