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Difference between abstract class and interface in Python

...lowing: class Abstract1( object ): """Some description that tells you it's abstract, often listing the methods you're expected to supply.""" def aMethod( self ): raise NotImplementedError( "Should have implemented this" ) Because Python doesn't have (and doesn't need) a formal...
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How to get the separate digits of an int number?

... numbers like 1100, 1002, 1022 etc. I would like to have the individual digits, for example for the first number 1100 I want to have 1, 1, 0, 0. ...
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How to check an Android device is HDPI screen or MDPI screen?

... density = getResources().getDisplayMetrics().density; // return 0.75 if it's LDPI // return 1.0 if it's MDPI // return 1.5 if it's HDPI // return 2.0 if it's XHDPI // return 3.0 if it's XXHDPI // return 4.0 if it's XXXHDPI ...
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Triggering HTML5 Form Validation

I have a form with several different fieldsets. I have some Javascript that displays the field sets to the users one at a time. For browsers that support HTML5 validation, I'd love to make use of it. However, I need to do it on my terms. I'm using JQuery. ...
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UITableViewCell Separator disappearing in iOS7

I have some strange issue with UITableView only in iOS 7. 37 Answers 37 ...
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Keyboard Interrupts with python's multiprocessing Pool

How can I handle KeyboardInterrupt events with python's multiprocessing Pools? Here is a simple example: 10 Answers ...
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How to read a single char from the console in Java (as the user types it)?

...e an easy way to read a single char from the console as the user is typing it in Java? Is it possible? I've tried with these methods but they all wait for the user to press enter key: ...
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How to implement history.back() in angular.js

I have directive which is site header with back button and I want on click to go back to the previous page. How do I do it in the angular way? ...
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What is the difference between and ? [duplicate]

...Let the code in the reusable file be : <html> <head> <title>reusable</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <img src="candle.gif" height="100" width="50"/> <br /> <p><b...
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using gitignore to ignore (but not delete) files

I have a tmp directory in my git repo I'd like to still exist, but be ignored. I added it to .gitignore , but git status still tells me about changes to files in that directory. I tried git rm -r --cached , but that removes it from the remote repo. How can I stop tracking changes to this dire...