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Why does PHP 5.2+ disallow abstract static class methods?

After enabling strict warnings in PHP 5.2, I saw a load of strict standards warnings from a project that was originally written without strict warnings: ...
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Conceptually, how does replay work in a game?

I was kind of curious as to how replay might be implemented in a game. 12 Answers 12 ...
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How does HTTP file upload work?

When I submit a simple form like this with a file attached: 5 Answers 5 ...
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Naming convention - underscore in C++ and C# variables

It's common to see a _var variable name in a class field. What does the underscore mean? Is there a reference for all these special naming conventions? ...
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How to check if the user can go back in browser history or not

I want using JavaScript to see if there is history or not, I mean if the back button is available on the browser or not. 18...
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C++ equivalent of Java's toString?

I'd like to control what is written to a stream, i.e. cout , for an object of a custom class. Is that possible in C++? In Java you could override the toString() method for similar purpose. ...
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How to format a java.sql Timestamp for displaying?

How do I formate a java.sql Timestamp to my liking ? ( to a string, for display purposes) 7 Answers ...
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How to tell whether a point is to the right or left side of a line

I have a set of points. I want to separate them into 2 distinct sets. To do this, I choose two points ( a and b ) and draw an imaginary line between them. Now I want to have all points that are left from this line in one set and those that are right from this line in the other set. ...
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Xcode changes unmodified storyboard and XIB files

Storyboards are rather a royal pain from a git workflow perspective when multiple people are collaborating on them. For example, the XML in the .storyboard file has its starting <document> tag's toolsVersion and systemVersion attributes altered by whatever configuration the most recent f...
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What does immutable mean?

If a string is immutable, does that mean that.... (let's assume JavaScript) 9 Answers ...