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Reading header data in Ruby on Rails

..."Cookie"] New way: request.headers["HTTP_COOKIE"] To get a Hash with all headers of the request. request.headers share | improve this answer | follow |...
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What is an abstract class in PHP?

...re interface. Also interfaces are a special case of abstract classes where ALL methods are abstract. See this section of the PHP manual for further reference. share | improve this answer |...
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Quick and easy file dialog in Python?

...a UI, but right now I'm prompting the user for the file to parse using raw_input which is most unfriendly, especially because the user can't copy/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...
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Is there a cross-browser onload event when clicking the back button?

For all major browsers (except IE), the JavaScript onload event doesn’t fire when the page loads as a result of a back button operation — it only fires when the page is first loaded. ...
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How to upload a file to directory in S3 bucket using boto

...mmand prompt and type aws configure, enter your info and you will automatically connect with boto3. Check boto3.readthedocs.io/en/latest/guide/quickstart.html – seeiespi Aug 28 '18 at 21:31 ...
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detect key press in python?

... Python has a keyboard module with many features. Install it, perhaps with this command: pip3 install keyboard Then use it in code like: import keyboard # using module keyboard while True: # making a loop try: # used try so that if user pressed other than the given ...
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Registry Key '…' has value '1.7', but '1.6' is required. Java 1.7 is Installed and the Registry is P

... one of the server admins "updated" our Java to an older version and uninstalled the one we were using. Don't ask me why, I don't know. I re-installed Java 1.7 and uninstalled 1.6 along with the JREs. ...
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Programmatically Determine a Duration of a Locked Workstation?

...do it. According to this Microsoft article, "There is no function you can call to determine whether the workstation is locked." It must be monitored using the SessionSwitchEventHandler. – JonathanDavidArndt Mar 12 at 2:26 ...
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How to check if a string is a valid date

... Using a "catch-it-all" rescue should be considered an anti-pattern. It can hide out other errors which we don't expect and make the debugging of the code extremely difficult. – yagooar Jan 29 '13 at 10:32...
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Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie

... I always find this confusing so I made a playground where you can visually explore what the convert function does. This is done in Swift 3 and Xcode 8.1b: import UIKit import PlaygroundSupport class MyViewController: UIViewController { override func viewDidLoad() { super.viewDidL...