Question

我完全卡住了。我正在开发在Swift中构建iOS应用程序。我需要在结构中定义一个工具数组，但是如果我包含任何超过4个项目，Xcode会被卡住索引。

在此处找到该特定问题的解决方案：https://stackoverflow.com/a/27531394。但是，我无法弄清楚如何附加到数组。当我尝试执行下面的代码时，我收到以下错误：“预期声明”。有什么想法吗？

import Foundation

struct Toolkit {
    var tools = [ [
        "name": "Know Yourself to Lead Yourself",
        "shape": "icon_knowyourself.pdf",
        "image": "know_yourself_to_lead_yourself.pdf",
        "backgroundColor": ["red": 215, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
        "name": "The Core",
        "shape": "icon_thecore.pdf",
        "image": "the_core.pdf",
        "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
        "name": "5 Circles of Influence",
        "shape": "icon_5circles.pdf",
        "image": "5_circles_of_influence.pdf",
        "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
        "name": "Support Challenge Matrix",
        "shape": "icon_supportchallenge.pdf",
        "image": "support_challenge_matrix.pdf",
        "backgroundColor": ["red": 205, "green": 34, "blue": 14, "alpha": 1.0]
        ]
    ]
    tools.append([
        "name": "Creating Healthy Culture",
        "shape": "icon_healthyculture.pdf",
        "image": "creating_healthy_culture.pdf",
        "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
    ])

}

Answer 1

在为结构或类定义接口时，可以执行的操作类型存在限制。您可以对值进行一些基本的初始化，但是不允许调用append（）这样的方法。这是对您的代码的快速调整，我已将其追加到init（）方法中：

struct Toolkit {
    var tools = [ [
        "name": "Know Yourself to Lead Yourself",
        "shape": "icon_knowyourself.pdf",
        "image": "know_yourself_to_lead_yourself.pdf",
        "backgroundColor": ["red": 215, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
            "name": "The Core",
            "shape": "icon_thecore.pdf",
            "image": "the_core.pdf",
            "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
            "name": "5 Circles of Influence",
            "shape": "icon_5circles.pdf",
            "image": "5_circles_of_influence.pdf",
            "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
            "name": "Support Challenge Matrix",
            "shape": "icon_supportchallenge.pdf",
            "image": "support_challenge_matrix.pdf",
            "backgroundColor": ["red": 205, "green": 34, "blue": 14, "alpha": 1.0]
        ]
    ]

    init() {
        tools.append([
            "name": "Creating Healthy Culture",
            "shape": "icon_healthyculture.pdf",
            "image": "creating_healthy_culture.pdf",
            "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
        ])
    }
}

let kit = Toolkit()
println(kit.tools)

无法弄清楚如何附加到数组（在结构中）（Swift）

1 个答案: