code: function(string, strict) {
  		if (typeof string !== 'string')
  			return string;
  		if (cacheFull[string])
  			return cacheFull[string];
  		var splitted = string.split(splitRegEx);
  		if (splitted.length == 1)
  			return string; // string is not interpolable
  		return cacheFull[string] = new Interpolable(string, splitted, strict);
  	}
docs: check if a string is interpolable. if so : return new Interpolable. else return original string.