Ios 在类初始值设定项中分配成员时，在Xcode中将属性分配给自身时发出警告

我正在学习快速跟随教程

我已经为游戏板创建了一个Array2D类

// Generic arrays in Swift are actually of type struct, not class but we need a class in this case since class objects are 
// passed by reference whereas structures are passed by value (copied).
// Our game logic will require a single copy of this data structure to persist across the entire game.
// Notice that in the class' declaration we provide a typed parameter: <T>. 
// This allows our array to store any type of data and therefore remain a general-purpose tool.
class Array2D<T> {
    let columns : Int
    let rows : Int

    //  an actual Swift array; it will be the underlying data structure which maintains references to our objects.
    // ? in Swift symbolizes an optional value. An optional value is just that, optional.
    // nil locations found on our game board will represent empty spots where no block is present.
    var array: Array<T?>

    init(colums: Int, rows: Int) {
        self.columns = columns // !! Assigning a property to itself. 
        self.rows = rows
        // we instantiate our internal array structure with a size of rows * columns. 
        // This guarantees that Array2D can store as many objects as our game board requires, 200 in our case.
        array = Array<T?>(count:rows * columns, repeatedValue: nil)
    }
}

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这个警告让我有点困惑，这不正是我想要做的吗？警告是什么意思？

您的初始声明中有一个输入错误：

init(colums: Int, rows: Int)
          ^

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您编写了

columns

而不是

columns

您在构造函数定义中输入了一个错误

构造函数中参数的名称是

colums

将其更改为列或将有问题的行更改为

self.columns = colums

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而且它应该可以工作

查看所有代码中单词的正确书写……在任何应用程序中

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在所有类、方法等中！不要说谢谢你

两个答案几乎相同，但@Rajeev Bhatia的速度更快。无论如何，非常感谢！有点尴尬。谢谢@麦克斯，放松点，几秒钟前我刚遇到过：D

self.columns = colums