源文件中的Swift Editor占位符 [英] Swift Editor Placeholder in source file

问题描述

嗨有快速错误源文件中的Swift编辑器占位符的问题
这是我的代码

hi have problem with the swift error "Swift Editor Placeholder In Source File" This is my code

public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell{

    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: <#T##IndexPath#>) as! CustomBrandCell

    let brandImage: UIImage = UIImage(named: self.brands[indexPath.row].name)!

    cell.brandImageView.image = brandImage

    return cell
}

推荐答案

我在SO上多次发现同样的问题。但他们都没有给出我想要的答案。

I found the same question many times on SO. But none of them gave the answer I was looking for.

当你有源文件时，你得到占位符其中一个（代码中带有蓝色背景的String）。

You get the Placeholder in source file when you have one of these (where it says "String" with a blue background) in your code.

占位符适用于我们的程序员。它说这里应该是String类型的值。您可以单击它并开始键入，只需将其替换为例如变量名称即可。您也可以按Tab键自动选择下一个占位符。当您调用具有多个参数的函数（因此多个占位符）时，这非常有用。

A placeholder is for us programmers. It says "here should be a value of the type String". You can click on it and start typing, to simply replace it with for example a variable name. You can also press tab to automatically select the next placeholder. This is very useful when you are calling a function with multiple parameters (and therefore multiple placeholders).

占位符实际上只是普通文本（<＃T ## Strign ＃>），但是XCode翻译它看起来就像它一样。

A placeholder is actually just normal text (<#T##Strign#>), but XCode "translates" it to look like how it does.

在你的情况下，错误在第三行。

In your case the error is on line three.

...withReuseIdentifier: "Cell", for: <#T##IndexPath#>) as! CustomBrandCell

正如您所见< #T ## IndexPath＃> 是一个占位符，就像我前面提到的普通文本一样。您可能希望这是 indexPath

As you can see <#T##IndexPath#> is a placeholder as normal text as I mentioned earlier. You probably want this to be indexPath

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