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Is there a way to iterate over a dictionary?

...ere you need a key in order to get a value . But how can I iterate over all keys and values in a NSDictionary , so that I know what keys there are, and what values there are? I know there is something called a for-in-loop in JavaScript . Is there something similar in Objective-C ? ...
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How to iterate a loop with index and element in Swift

...100, height: 100) button.addTarget(self, action: #selector(iterate(_:)), for: .touchUpInside) view.addSubview(button) } @objc func iterate(_ sender: UIButton) { let tuple = generator.next() print(String(describing: tuple)) } } PlaygroundPage.current.liv...
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ASP.NET MVC 3 - Partial vs Display Template vs Editor Template

...ch template gets chosen to generate the UI for the model. They are also usually used for data models (i.e. models that represent rows in a database, etc) On the other hand Partial is view-centric in that you are mostly concerned with choosing the correct partial view. The view doesn't necessarily n...
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How do I send a cross-domain POST request via JavaScript?

...e.php (using PHP as an example). Note: you only need to set Access-Control-Allow-Origin for NON OPTIONS requests - this example always sets all headers for a smaller code snippet. In postHere.php setup the following: switch ($_SERVER['HTTP_ORIGIN']) { case 'http://from.com': case 'https://fro...
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How do I check two or more conditions in one ?

...answered Dec 2 '11 at 11:44 olly_ukolly_uk 10.2k33 gold badges3737 silver badges4545 bronze badges ...
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How to use mod operator in bash?

... answered Mar 31 '14 at 4:06 h__h__ 81588 silver badges1818 bronze badges ...
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How do I associate a Vagrant project directory with an existing VirtualBox VM?

...othername". Stop the machine from provisioning: Create a file named action_provision in the same dir as the id file, set it's contents to: 1.5:{id} replacing {id} with the id found in step 1. Setup a new public/private key: Vagrant uses a private key stored in .vagrant/machines/default/virtualbox/...
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Which MySQL datatype to use for an IP address? [duplicate]

I want to get the IP address from $_SERVER['REMOTE_ADDR'] and some other $_SERVER variables, which datatype is the right one for this? ...
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Getting multiple keys of specified value of a generic Dictionary?

...e, perhaps maintain two dictionary mapping key->value and value->List_of_keys. If you do the latter you will trade storage for look up speed. It wouldn't take much to turn @Cybis example into such a data structure. s...
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iPhone hide Navigation Bar only on first page

... hidden when the first view loads and then hidden when the "children" get called. Trouble is that I cannot find the event/action to trigger it to hide again when they get back to the root view.... ...