Nodejs String Repeat repeat(count)

Method Source Code

// You're working on some interesting console application and you want to line up some of your lines just right.
// A lot of your data is nested down so you've got code like this all over:

// console.log('Root ->');
// console.log('    Sub-node');
// console.log('    Sub-node->');
// console.log('        Sub-sub-node');
// .../*from  w  w  w  .j  a  v  a2s.c om*/

// but that just looks terrible and doesn't scale well for variable levels of nesting.
// Oh, if only you could write something more like:

// console.log('Root->');
// console.log(' '.repeat(4) + 'Sub-node');
// console.log(' '.repeat(4) + 'Sub-node->');
// console.log(' '.repeat(8) + 'Sub-sub-node');
// ...
// Oh, that's right. You can.

// for loops are cool, I guess. Other kinds of solutions are a lot cooler.
String.prototype.repeat = function(count) {
  if (count === 1) return this;
  return this + this.repeat(count - 1);
};

Related

1. repeat(count)

   String.prototype.repeat = function(count) {
     return new Array(count + 1).join(this); 
   };
   

2. repeat(count)

   var range = function(k) {
       return Array.apply(null, Array(k)).map(function(_, i) {
           return i;
       });
   };
   String.prototype.repeat = function(count) {
       if (count < 1) return '';
       var result = '', pattern = this.valueOf();
       while (count > 1) {
   ...
   

3. repeat(count)

   String.prototype.repeat = function(count) {
     if (count < 1) return '';
     var result = '', pattern = this.valueOf();
     while (count > 0) {
       if (count & 1) result += pattern;
       count >>= 1, pattern += pattern;
     return result;
   };
   ...
   

4. repeat(count)

   String.prototype.repeat = function(count) {
     if (count < 1) return '';
     var result = '', pattern = this.valueOf();
     while (count > 0) {
       if (count & 1) result += pattern;
       count >>= 1, pattern += pattern;
     return result;
   };
   ...
   

5. repeat(count)

   String.prototype.repeat = function(count) {
       if (count < 1) return '';
       var result = '', pattern = this.valueOf();
       while (count > 0) {
           if (count & 1) result += pattern;
           count >>= 1, pattern += pattern;
       return result;
   };
   ...
   

6. repeat(count)

   String.prototype.repeat = function(count) {
    return (count === 1) ? this : this + this.repeat(count-1);
   };
   console.log('x'.repeat(8) + 'Sub-node');
   

7. repeat(count)

   String.prototype.repeat = function(count) {
     var result = '';
     for (var i = 0; i < count; i++) {
       result += this;
     };
     return result;
   console.log("*".repeat(5).padLeft(10, "-").padRight(15, "+"));
   

8. repeat(count)

   String.prototype.repeat = function(count) {
       var result = "",
           str = this.toString();
       for (var i = 0; i < count; i++) {
           result += str;
       return result;
   };
   

9. repeat(count, max = 5, zero = '---')

   String.prototype.$repeat = function (count, max = 5, zero = '---') {
     if (count > max) {
       return `${this} x ${count}`;
     } else if (count > 0) {
       return this.repeat(count);
     } else {
       return zero;
   };
   ...