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37 lines
816 B
JavaScript
37 lines
816 B
JavaScript
if (!Array.prototype.findAsync) {
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Array.prototype.findAsync = async function (asyncCallback) {
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for (const item of this) {
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if (await asyncCallback(item)) {
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return item
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}
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}
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}
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if (!Array.prototype.findAllIndexes) {
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Array.prototype.findAllIndexes = function (Callback) {
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return this.reduce(function(a, e, i) {
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if (Callback(e))
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a.push(i)
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return a
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}, [])
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}
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}
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if (!Array.prototype.count) {
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Array.prototype.count = function (o) {
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var callback
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var item
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if (typeof o==="function") {
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callback=o
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}
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else {
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callback=(e)=>item==e
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}
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return this.reduce(function(c, e, i) {
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if (callback) {
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if (callback(e))
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c++
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return c
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}
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},0)
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}
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}
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} |