define

优质

小牛编辑

136浏览

2023-12-01

Create a new constructor function for a type inheriting from StringLikeSequence.

Signature

StringLikeSequence.define = function(methodName, overrides) { /*...*/ }

StringLikeSequence.define = function define(methodName, overrides) {
  if (!overrides || typeof overrides.get !== 'function') {
throw new Error("A custom string-like sequence must implement *at least* get!");
  }

  return defineSequenceType(StringLikeSequence, methodName, overrides);
}

Name	Type(s)	Description
methodName	string\|Array.<string>	The name(s) of the method(s) to be used for constructing the new sequence. The method will be attached to the `StringLikeSequence` prototype so that it can be chained with any other methods that return string-like sequences.
overrides	Object	An object containing function overrides for this new sequence type. Has the same requirements as ArrayLikeSequence.define.
returns	Function	A constructor for a new type inheriting from `StringLikeSequence`.

Examples

Lazy.StringLikeSequence.define("zomg", {
  length: function() {
return this.parent.length() + "!!ZOMG!!!1".length;
  },

  get: function(i) {
if (i < this.parent.length()) {
  return this.parent.get(i);
}
return "!!ZOMG!!!1".charAt(i - this.parent.length());
  }
});

Lazy('foo').zomg() // sequence: "foo!!ZOMG!!!1"