9 lines
199 B
JavaScript
9 lines
199 B
JavaScript
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module.exports = function makeMap (str) {
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var map = Object.create(null)
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var list = str.split(',')
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for (var i = 0; i < list.length; i++) {
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map[list[i]] = true
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}
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return val => map[val]
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}
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