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krishna2nd/Sum Curry function with extensibility

Last active September 13, 2019 08:50
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  1. krishna2nd revised this gist Sep 13, 2019. No changes.
  2. krishna2nd created this gist Sep 13, 2019.
    31 changes: 31 additions & 0 deletions Sum Curry function with extensibility
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,31 @@
    function sum() {
    let args = [...arguments];
    if (args.length > 2) {
    let sumValue = 0;
    args.forEach(arg => {
    sumValue += arg;
    });
    return sumValue;
    }
    if (args.length === 2) {
    return function() {
    return sum.apply(this, [...args, ...arguments]);
    };
    }

    function single() {
    if (arguments.length === 0) {
    return sum.apply(this, args);
    }
    args = [...args, ...arguments];
    return single;
    };
    return single;
    }


    console.log(sum(2, 3, 4));
    console.log(sum(2, 3)(4));
    console.log(sum(2, 3, 4, 0, 1));
    console.log(sum(2)(3)(4)());
    console.log(sum(2)(3)(4)(0)(1)());