复杂词典在 swift 中阻止了 Xcode 编译操作

Question

xCode 7.1 + swift2.1 + iOS 9.0
下面的代码阻止 Xcode 编译操作。

let dic_1:Dictionary<String,Int> = ["key":200]
print("dic_1---->\(dic_1)")

有人遇到过这种情况吗？这是怎么发生的？

感谢您纠正语法。

我发现这不是上面代码的原因。

我的源代码如下：

let dic_1 = [
    "status": 200,
    "info": "1234",
    "data":[

        "st_id":"st_id",
        "st_name":"radiant",
        "address":"dire",
        "longitude":"122.111",
        "latitude":"123.000000",
        "is_favorite":"0",
        "score":"5",
        "thumbnail":"www.baidu.com",
        "comment_count":"45612",
        "cert_img_url":"www.baidu.com",
        "has_inspay":"1",
        "has_car_discount":"1",
        "has_groupon":"1",
        "score_environment":"4.5",
        "score_service":"5.0",
        "score_oil":"5.0",
        "type":"98",
        "city":"SHENZHEN",
        "show_price_discount":"1",
        "is_support_invoice":"1",
        "price":[
            [
                "oil_name":"95#",
                "market_price":"6.23",
                "sell_price":"6.00",
                "wecar_price":"-100.00"
            ],
            [
                "oil_name":"95#",
                "market_price":"6.23",
                "sell_price":"6.00",
                "wecar_price":"-100.00"
            ],
            [
                "oil_name":"95#",
                "market_price":"6.23",
                "sell_price":"6.00",
                "wecar_price":"-100.00"
            ],

        ],

        "promotions": [
            "promotion1",
            "promotion1",
            "promotion1",
            "promotion1"
        ],
        "gpns":[
            [
                "gpn_id":"75642",
                "gpn_name":"gpn_name",
                "oil_type":"95",
                "price":"180",
                "sell_amount":"20000000",
                "old_price":"200"
            ]
        ],
        "discount_items":[

            [
                "desc":"It's a descrition.",
                "disc_type":"1"
            ]
        ]
    ]
]

print("dic_1---->\(dic_1)")

Playground 是运行运行，从来没有弄清楚 anything.So 这是否发生在 iOS project.No 错误中，只是运行。

Answer 1

您的 data 键有一个复杂的嵌套结构，所以 Swift 的类型推断系统失败了。在我的 Xcode 7.1.1 中，它给出了 "Type is ambiguous without more context" 错误。

向编译器提示数据类型：

let data: [String: Any] = [
    "st_id":"st_id",
    "st_name":"radiant",
    "address":"dire",
    "longitude":"122.111",
    "latitude":"123.000000",
    "is_favorite":"0",
    "score":"5",
    "thumbnail":"www.baidu.com",
    "comment_count":"45612",
    "cert_img_url":"www.baidu.com",
    "has_inspay":"1",
    "has_car_discount":"1",
    "has_groupon":"1",
    "score_environment":"4.5",
    "score_service":"5.0",
    "score_oil":"5.0",
    "type":"98",
    "city":"SHENZHEN",
    "show_price_discount":"1",
    "is_support_invoice":"1",
    "price":[
        [
            "oil_name":"95#",
            "market_price":"6.23",
            "sell_price":"6.00",
            "wecar_price":"-100.00"
        ],
        [
            "oil_name":"95#",
            "market_price":"6.23",
            "sell_price":"6.00",
            "wecar_price":"-100.00"
        ],
        [
            "oil_name":"95#",
            "market_price":"6.23",
            "sell_price":"6.00",
            "wecar_price":"-100.00"
        ],

    ],

    "promotions": [
        "promotion1",
        "promotion1",
        "promotion1",
        "promotion1"
    ],
    "gpns":[
        [
            "gpn_id":"75642",
            "gpn_name":"gpn_name",
            "oil_type":"95",
            "price":"180",
            "sell_amount":"20000000",
            "old_price":"200"
        ]
    ],
    "discount_items":[

        [
            "desc":"It's a descrition.",
            "disc_type":"1"
        ]
    ]
]

let dic_1: [String: Any] = [
    "status": 200,
    "info": "1234",
    "data": data
]

复杂词典在 swift 中阻止了 Xcode 编译操作

Complex Dictionary blocked Xcode compile operation in swift

compiler-optimization

ios

swift

xcode7