export class Game {
    id: number;
    home: string;
    away: string;
    score_home: number;
    score_away: number;
   // ещё до хера полей
}

export class GameChanges {
    id: number;
    order: number | null;
    score_home: number | null;
    score_away: number | null;
    in_play: boolean | null;
    time: string | null;
   // и т.д. - ещё до хера полей
}

applyGameChanges (a:GameChanges) {
        this.order = a.order ? a.order : this.order;
        this.score_home = a.score_home ? a.score_home : this.score_home;
        this.score_away = a.score_away ? a.score_away : this.score_away;
        this.in_play = a.in_play ? a.in_play : this.in_play;
        // и т.д.
    };