如何附加到[“foo”：“bar”](How to append to [“foo” : “bar”])

如何附加到[“foo”：“bar”](How to append to [“foo” : “bar”])

我在swift 1.2中有以下内容

let params = ["foo" : "bar"]

我想在params中添加更多内容，以便在for循环后最终得到以下结果

["foo" : "bar", "foo2" : "bar3", "foo3" : "bar3"]

谢谢。

I have the following in swift 1.2

let params = ["foo" : "bar"]

I would like to add more to the params so I can end up with the following after a for loop

["foo" : "bar", "foo2" : "bar3", "foo3" : "bar3"]

Thanks.

最满意答案

您无法更改参数，因为您将其定义为常量。 您需要使用var将其定义为变量：

var params = ["foo" : "bar"] params["foo2"] = "bar2" params["foo3"] = "bar3" println(params) // [foo3: bar3, foo2: bar2, foo: bar]"

You can't change params because you defined it as a constant. You need to define it as a variable using var:

var params = ["foo" : "bar"] params["foo2"] = "bar2" params["foo3"] = "bar3" println(params) // [foo3: bar3, foo2: bar2, foo: bar]"