module es {
    /**
     * 用于管理一对对象的简单DTO
     */
    export class Pair<T> {
        public first: T;
        public second: T;

        constructor(first: T, second: T){
            this.first = first;
            this.second = second;
        }

        public clear(){
            this.first = this.second = null;
        }

        public equals(other: Pair<T>){
            return this.first == other.first && this.second == other.second;
        }
    }
}