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How to randomize (shuffle) a JavaScript array?
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58 Answers
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Finding index of character in Swift String
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32 Answers
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Finding sum of elements in Swift array
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16 Answers
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How to map and remove nil values in Ruby
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CATALINA_OPTS vs JAVA_OPTS - What is the difference?
I was trying to find out the difference between Apache Tomcat variables - CATALINA_OPTS and JAVA_OPTS in SO and surprised to see that there is no question/answer posted here yet. So I thought of sharing it here (with answer) after finding out the difference. Check the answer/difference below...
How to find the lowest common ancestor of two nodes in any binary tree?
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34 Answers
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In Python, when should I use a function instead of a method?
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Using margin:auto to vertically-align a div
So I know we can center a div horizontally if we use margin:0 auto; . Should margin:auto auto; work how I think it should work? Centering it vertically as well?
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How to elegantly deal with timezones
I have a website that is hosted in a different timezone than the users using the application. In addition to this, users can have a specific timezone. I was wondering how other SO users and applications approach this? The most obvious part is that inside the DB, date/times are stored in UTC. When on...
Difference between add(), replace(), and addToBackStack()
What is the main difference between calling these methods:
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