let hoge: [A] = [ A(fuga: fuga1 as Int?, piyo: piyo1 as Int?), A(fuga: fuga1 as Int?, piyo: piyo1 as Int?), A(fuga: fuga1 as Int?, piyo: piyo1 as Int?), A(fuga: fuga1 as Int?, piyo: piyo1 as Int?), A(fuga: fuga1 as Int?, piyo: piyo1 as Int?), A(fuga: fuga1 as Int?, piyo: piyo1 as Int?), ]
明示してもだめだた