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Unable to find specific subclass of NSManagedObject

...://stackoverflow.com/a/31287260/1187415). Remark: This answer was originally written for Xcode 6. There were some changes in the various Xcode 7 beta releases with respect to this problem. Since it is an accepted answer with many upvotes and links to it, I have tried to summarize the situation fo...
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Node.js project naming conventions for files & folders

... your tests An example which uses this setup is nodejs-starter. I personally changed this setup to: / /etc - contains configuration /app - front-end javascript files /config - loads config /models - loads models /bin - helper scripts /lib - back-end express files /config - lo...
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What's the nearest substitute for a function pointer in Java?

...want to create more methods that do exactly the same thing, except for a small calculation that's going to change one line of code. This is a perfect application for passing in a function pointer to replace that one line, but Java doesn't have function pointers. What's my best alternative? ...
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Regex for password must contain at least eight characters, at least one number and both lower and up

... "^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{8,}$" does not allow symbols as one of the 8 characters – Wee Jan 6 '15 at 2:30 2 ...
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Update statement with inner join on Oracle

... The second example has the benefit of allowing you to test the SQL before actually performing the update. – Daniel Reis Jan 19 '12 at 10:18 11 ...
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Cached, PHP generated Thumbnails load slowly

...as how to make this site, load faster. First we needed to read these waterfalls. Thanks all for your suggestions on the waterfall readout analysis. Evident from the various waterfall graphs shown here is the main bottleneck: the PHP-generated thumbnails. The protocol-less jquery loading from CDN adv...
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iOS: How to store username/password within an app?

...ta and kSecAttrAccount in Objective-C code, so be sure to cast them using (__bridge id), e.g., [keychainItem setObject:obj forKey:(__bridge id)kSecValueData]; – Joe Hankin Apr 6 '13 at 23:13 ...
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Unzip All Files In A Directory

I have a directory of ZIP files (created on a Windows machine). I can manually unzip them using unzip filename , but how can I unzip all the ZIP files in the current folder via the shell? ...
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Why are mutable structs “evil”?

... any other copies which might be around. If your struct is immutable then all automatic copies resulting from being passed by value will be the same. If you want to change it you have to consciously do it by creating a new instance of the struct with the modified data. (not a copy) ...
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How to convert a Drawable to a Bitmap?

I would like to set a certain Drawable as the device's wallpaper, but all wallpaper functions accept Bitmap s only. I cannot use WallpaperManager because I'm pre 2.1. ...