[英]enum array index in c#
I am working with RGB colour data in a C# (WPF) app, and find myself with a lot of cut and pasted code along the lines of 我正在C#(WPF)应用程序中处理RGB颜色数据,发现自己有很多剪切和粘贴的代码,包括
totals.red += currentPixel.red;
totals.green += currentPixel.green;
totals.blue += currentPixel.blue;
I'd like to reduce this copy-pasting and vulnerability to copy-paste errors. 我想减少这种复制粘贴和对复制粘贴错误的攻击。 I could use arrays of size 3 around the place, but accessing those by number reduces readability. 我可以在周围使用大小为3的数组,但是按数字访问这些数组会降低可读性。
I'd like to write something like this: 我想写这样的东西:
for (col = all colours) {
totals[col] += currentPixel[col];
}
I'd know how to go about this in C, but am unfamiliar with C#. 我知道如何使用C进行此操作,但不熟悉C#。 Something with enums? 有枚举吗?
Edit: Made the example make more sense. 编辑:使该示例更有意义。
If you really want to use enums for this, you can do it this way: 如果您真的想为此使用枚举,则可以这样进行:
enum Color { red, green, blue };
{
foreach (int colorValue in Enum.GetValues(typeof(Color)))
thing[colorValue] = otherthing[colorValue] * 2;
}
This would also allow you to grab an individual color by name in other code: 这也将允许您在其他代码中按名称获取单个颜色:
var color = thing[Color.red];
Assuming that red, green and blue are of type Color 假设红色,绿色和蓝色为颜色类型
You can setup a List of colours 您可以设置颜色列表
List<Color> colors = new List<Color>();
Add items to it: 向其中添加项目:
colors.Add(green);
colors.Add(blue);
colors.Add(red);
Then itterate: 然后致死:
foreach (Color color in colors)
{
color.thing = color.otherThing * 2
}
Enums won't help here. 枚举在这里无济于事。 But you can define your own type as done in Integer array or struct array - which is better? 但是您可以像在Integer数组或struct数组中定义的那样定义自己的类型-哪个更好? , and overload the arithmetic operators as described in http://msdn.microsoft.com/en-us/library/8edha89s(v=vs.80).aspx to allow multiplying to an int for example. ,并按http://msdn.microsoft.com/zh-cn/library/8edha89s(v=vs.80).aspx中所述重载算术运算符,以允许乘以一个int。 Eg 例如
thing = otherthing * 2;
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