can someone please explain to mke why i get these errors? [closed] - swift

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in one part of the code everything is ok and the next although it is the exact same thing it gives me an error
i am trying to build the MVVM of my application but i keep getting these errors

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Length Text Field [closed]

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I wrote this code below to get the length of a textfield and pop up an alert after it, it keeps ask me to declare the length in the #interface, how could I do that?
if ([myTextField length]<=0)
Maybe you should use [myTextField.text length]?
If this wasn't the problem then maybe you could post some codes and the error message to get more clarification ;D

How do I send matrix params using Dispatch? [closed]

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Closed 8 years ago.
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I'm using version 0.10.1 of dispatch-core and need to send matrix params to a third party REST API.
Does anyone have any idea how to do this?
Thanks.

How to recover deleted files from iPhone in objective c? [closed]

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I am developing an IOS application for recovering deleted files.
So Can any one tell me is it possible and How?

How to add our application into iAD network [closed]

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Could you tell me how to add the application into iAD network?
Please give me advice!
Thuong.
google instantly brings up the well known raywenderlich site with this tutorial http://www.raywenderlich.com/1371/how-to-integrate-iad-into-your-iphone-app

Can't access Apple Developer Provisioning Portal [closed]

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I have an iphone application which i needed to be tested in the phone.My client created an account in the dev center and when i am login to this through the credentials it is showing access denied.can anybody knows how this is happening and also how to sort out this?
https://developer.apple.com/ios/my/overview/index.action
It will describe all for you?