15 lines
326 B
JavaScript
15 lines
326 B
JavaScript
function addIfNew(list, value) {
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if (list.indexOf(value) === -1) {
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list.push(value);
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}
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}
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export default function addNewValuesOnly(list, values) {
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if (Array.isArray(values)) {
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for (var i = 0, len = values.length; i < len; ++i) {
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addIfNew(list, values[i]);
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}
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} else {
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addIfNew(list, values);
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}
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} |