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@import vs #import - iOS 7

I am playing around with some of the new iOS 7 features and working with some of the Image Effects as discussed in the WWDC video "Implementing Engaging UI on iOS". For producing a blur effect within the source code for the session, UIImage was extended via a category which imports UIKit like so: ...
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Firefox ignores option selected=“selected”

If you change a dropdown and refresh the page, Firefox seems to ignore the selected attribute. 20 Answers ...
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Cannot find module cv2 when using OpenCV

I have installed OpenCV on the Occidentalis operating system (a variant of Raspbian) on a Raspberry Pi, using jayrambhia's script found here . It installed version 2.4.5. ...
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Python string.replace regular expression [duplicate]

I have a parameter file of the form: 4 Answers 4 ...
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delete_all vs destroy_all?

I am looking for the best approach to delete records from a table. For instance, I have a user whose user ID is across many tables. I want to delete this user and every record that has his ID in all tables. ...
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Django template how to look up a dictionary value with a variable

The regular way to lookup a dictionary value in a Django template is {{ mydict.key1 }} , {{ mydict.key2 }} . What if the key is a loop variable? ie: ...
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Fully custom validation error message with Rails

Using Rails I'm trying to get an error message like "The song field can't be empty" on save. Doing the following: 17 Answer...
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Rename multiple files by replacing a particular pattern in the filenames using a shell script [dupli

I need to write a shell script for this. Can someone suggest how to begin? 8 Answers 8...
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How to pass data from 2nd activity to 1st activity when pressed back? - android

I've 2 activities, Activity1 and Activity2 . 9 Answers 9 ...
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How to create a library project in Android Studio and an application project that uses the library p

I'm new to the gradle build system and IntelliJ. 14 Answers 14 ...