ios 错误：“没有更多上下文，表达式类型不明确”
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/31211809/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Error: 'Type of expression is ambiguous without more context'
提问by Kody R.
I'm pretty new to coding Swift, so please excuse me if this error is a simple answer!
我对 Swift 编码很陌生，所以如果这个错误是一个简单的答案，请原谅我！
I keep getting an error message that says "Type of expression is ambiguous without more context."
我不断收到一条错误消息，指出“没有更多上下文，表达式类型不明确。”
var findTimelineData: PFQuery = PFQuery(className: "Sweets")
findTimelineData.findObjectsInBackgroundWithBlock {
(objects:[AnyObject]?, error:NSError?) -> Void in
if error == nil {
for object:PFObject in objects! { // ----This is the error line---
self.timelineData.addObject(object)
}
}
}
Any suggestions?
有什么建议？
Thanks!
谢谢！
回答by Eric Aya
You can help the compiler know what objectsis like this:
你可以帮助编译器知道objects是这样的：
for object in objects as! [PFObject] {
self.timelineData.addObject(object)
}
回答by Tom Howard
if let pfObjects = objects as? [PFObject]
{
for pfObject in pfObjects
{
self.timelineData.addObject(pfObject)
}
}
...exclamation points in Swift code give me the heeby jeebies.
... Swift 代码中的感叹号给了我heeby jeebies。
回答by Zigii Wong
If you are writing some code likes:
如果您正在编写一些代码，例如：
for (i, view) in views {
}
You need to add enumerated:
您需要添加enumerated：
for (i, view) in views.enumerated() {
}
And now it should work.
现在它应该可以工作了。
