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How to find an available port?

...d like to find a port in an automatic way. In this respect I have two questions. 16 Answers ...
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How to save a PNG image server-side, from a base64 data string

..._array($type, [ 'jpg', 'jpeg', 'gif', 'png' ])) { throw new \Exception('invalid image type'); } $data = str_replace( ' ', '+', $data ); $data = base64_decode($data); if ($data === false) { throw new \Exception('base64_decode failed'); } } else { throw new \Ex...
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Font-awesome, input type 'submit'

...hich actually links with class 'btn' from twitter-bootstrap) in my applications, but can't add icons on 'input type submit'. ...
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How do I drop a foreign key constraint only if it exists in sql server?

... The more simple solution is provided in Eric Isaacs's answer. However, it will find constraints on any table. If you want to target a foreign key constraint on a specific table, use this: IF EXISTS (SELECT * FROM sys.foreign_keys WHERE ob...
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ActionBarCompat: java.lang.IllegalStateException: You need to use a Theme.AppCompat

I am getting a RuntimeException on Android 2.3.5 but I am using Theme.AppCompat (res/values/themes.xml). This is the phone: http://www.gsmarena.com/samsung_galaxy_y_s5360-4117.php ...
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Archiving project in Xcode incorrectly creates multi-application bundle

Archiving my project in Xcode is creating a multi-application bundle, instead of bundling my main target for release, which is what I want. Specifically, when I validate my archive in Organizer, it gives me the message: ...
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Quick and easy file dialog in Python?

...paste the path. I would like a quick and easy way to present a file selection dialog to the user, they can select the file, and then it's loaded to the database. (In my use case, if they happened to chose the wrong file, it would fail parsing, and wouldn't be a problem even if it was loaded to the...
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Why can I change value of a constant in javascript

... The documentation states: ...constant cannot change through re-assignment ...constant cannot be re-declared When you're adding to an array or object you're not re-assigning or re-declaring the constant, it's already declared and as...
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How can I mask a UIImageView?

... Notice that this is necessary to be a UIImageView for this solution. The other solution works with a UIImage only. – adriendenat Oct 5 '12 at 10:29 1 ...
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How do you create a transparent demo screen for an Android app?

...nt demo screen that is launched only when a user first installs my application. Here's an example from the Pulse News app: ...