xcode 字符串不可转换为 int (Swift)
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string is not convertible to int (Swift)
提问by quemeful
This is the code I have (my actual code is more complex, but I simplified it down, and I still get this error):
这是我的代码（我的实际代码更复杂，但我简化了它，但仍然出现此错误）：
let x = "1" as Int
Xcode says:
Xcode 说：
'String' is not convertible to 'Int'
Am I missing something or is this a beta bug?
我错过了什么还是这是一个测试版错误？
回答by Mundi
You cannot simply cast with as. There is a method that produces Intexplicitly.
你不能简单地用as. 有一种方法可以Int显式生成。
let x = "1".toInt()
Notice that the result is of type Int?because Swift cannot know upfront if the conversion succeeds.
请注意，结果是类型的，Int?因为 Swift 无法预先知道转换是否成功。
println(x!)
Or:
或者：
let x = "1".toInt()!
回答by CAN
I hope this helps you thats how it should be
我希望这对你有帮助 那应该是这样
let x = "1".toInt()
