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19 lines
409 B
JavaScript
19 lines
409 B
JavaScript
/**
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* @param {integer} init
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* @return { increment: Function, decrement: Function, reset: Function }
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*/
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var createCounter = function(init) {
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let n = init;
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return {
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increment: () => ++n,
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decrement: () => --n,
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reset: () => (n = init),
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};
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};
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/**
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* const counter = createCounter(5)
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* counter.increment(); // 6
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* counter.reset(); // 5
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* counter.decrement(); // 4
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*/
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