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What do I have to do to get Core Data to automatically migrate models?

...re to look. In my AppDelegate I set-up the NSPersistentStoreCoordinator - and you need to add some options to this to tell it to handle auto-migrate: NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [...
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Warning: “format not a string literal and no format arguments”

Since upgrading to the latest Xcode 3.2.1 and Snow Leopard, I've been getting the warning 11 Answers ...
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How can I iterate over an enum?

I just noticed that you can not use standard math operators on an enum such as ++ or += 21 Answers ...
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In a Bash script, how can I exit the entire script if a certain condition occurs?

...oniLeigh If it's closing the "window" likely you're putting the exit # command inside a function, not a script. (In which case use return # instead.) – Jamie Jan 6 at 20:27 a...
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python pandas dataframe to dictionary

I've a two columns dataframe, and intend to convert it to python dictionary - the first column will be the key and the second will be the value. Thank you in advance. ...
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How to reload a clojure file in REPL

...ong in the OP's dev environment because for a single file the two (:reload and :reload-all) should have the same effect. Here's the full command for :reload-all: (use 'your.namespace :reload-all) This reloads all the dependencies, too. – Jason Feb 19 '16 at 1...
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Can't access RabbitMQ web management interface after fresh install

...e this [{rabbit, [{loopback_users, []}]}]. # It is danger for default user and default password for remote access # better to change password rabbitmqctl change_password guest NEWPASSWORD If you want create a new user with admin grants: rabbitmqctl add_user test test rabbitmqctl set_user_tags t...
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Should URL be case sensitive?

... According to W3's "HTML and URLs" they should: There may be URLs, or parts of URLs, where case doesn't matter, but identifying these may not be easy. Users should always consider that URLs are case-sensitive. ...
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Change the name of the :id parameter in Routing resources for Rails

I looked around on how to change the dynamic params slot and found this post that does the exact thing. The post is https://thoughtbot.com/blog/rails-patch-change-the-name-of-the-id-parameter-in ...
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Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir

...s well. You can use the PHP's file_get_contents function to read that URL and process the retrieved data. Resource: http://developers.facebook.com/docs/api Note: In php.ini, you need to make sure that the OpenSSL extension is enabled to use thefile_get_contents function of PHP to read that URL. ...