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How to parse/format dates with LocalDateTime? (Java 8)

Java 8 added a new java.time API for working with dates and times ( JSR 310 ). 7 Answers ...
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What is polymorphism, what is it for, and how is it used?

What is polymorphism, what is it for, and how is it used? 28 Answers 28 ...
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Algorithm to generate a crossword

... I came up with a solution which probably isn't the most efficient, but it works well enough. Basically: Sort all the words by length, descending. Take the first word and place it on the board. Take the next word. Search through all...
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When do we have to use copy constructors?

I know that C++ compiler creates a copy constructor for a class. In which case do we have to write a user-defined copy constructor? Can you give some examples? ...
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I need to securely store a username and password in Python, what are my options?

I'm writing a small Python script which will periodically pull information from a 3rd party service using a username and password combo. I don't need to create something that is 100% bulletproof (does 100% even exist?), but I would like to involve a good measure of security so at the very least it w...
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WebView and HTML5

I'm piecing together a cheapo app that amongst other things "frames" some of our websites... Pretty simple with the WebViewClient . until I hit the video. ...
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What part of Hindley-Milner do you not understand?

... The horizontal bar means that "[above] implies [below]". If there are multiple expressions in [above], then consider them anded together; all of the [above] must be true in order to guarantee the [below]. : means has type ∈ means is in. (Likewise ∉ means "is not...
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Why do I need an IoC container as opposed to straightforward DI code? [closed]

I've been using Dependency Injection (DI) for a while, injecting either in a constructor, property, or method. I've never felt a need to use an Inversion of Control (IoC) container. However, the more I read, the more pressure I feel from the community to use an IoC container. ...
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Please explain the exec() function and its family

... Simplistically, in UNIX, you have the concept of processes and programs. A process is an environment in which a program executes. The simple idea behind the UNIX "execution model" is that there are two operations you can do. The...
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Git for beginners: The definitive practical guide

Ok, after seeing this post by PJ Hyett , I have decided to skip to the end and go with Git . 37 Answers ...