equals

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2023-12-01

Compare this to another sequence for equality.

Signature

Sequence.equals = function(other, equalityFn) { /*...*/ }

Sequence.equals = function equals(other, equalityFn) {
  if (!(other instanceof Sequence)) {
return false;
  }

  var it  = this.getIterator(),
  oit = other.getIterator(),
  eq  = equalityFn || Lazy.equality;
  while (it.moveNext()) {
if (!oit.moveNext()) {
  return false;
}
if (!eq(it.current(), oit.current())) {
  return false;
}
  }
  return !oit.moveNext();
}

Name	Type(s)	Description
other	Sequence	The other sequence to compare this one to.
equalityFn	Function?	An optional equality function, which should take two arguments and return true or false to indicate whether those values are considered equal.
returns	boolean	Whether the two sequences contain the same values in the same order.

Examples

Lazy([1, 2]).equals(Lazy([1, 2]))   // => true
Lazy([1, 2]).equals(Lazy([2, 1]))   // => false
Lazy([1]).equals(Lazy([1, 2]))      // => false
Lazy([1, 2]).equals(Lazy([1]))      // => false
Lazy([]).equals(Lazy([]))           // => true
Lazy(['foo']).equals(Lazy(['foo'])) // => true
Lazy(['1']).equals(Lazy([1]))       // => false
Lazy([false]).equals(Lazy([0]))     // => false
Lazy([1, 2]).equals([1, 2])         // => false
Lazy([1, 2]).equals('[1, 2]')       // => false