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Scala: What is a TypeTag and how do I use it?

All I know about TypeTags is that they somehow replaced Manifests. Information on the Internet is scarce and doesn't provide me with a good sense of the subject. ...
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List of Big-O for PHP functions

After using PHP for a while now, I've noticed that not all built-in PHP functions are as fast as expected. Consider these two possible implementations of a function that finds if a number is prime using a cached array of primes. ...
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How Drupal works? [closed]

...upal happens because of one of those events being fired. The MenuAPI only knows about what urls/paths are handled by different plugin modules because it fires the 'menu' event (hook_menu) and gathers up all the metadata plugin modules respond with. ("I'll take care of the url 'news/recent', and here...
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HTML5 Canvas vs. SVG vs. div

... a color and line thickness), draw that thing, and then the Canvas has no knowledge of that thing: It doesn't know where it is or what it is that you've just drawn, it's just pixels. If you want to draw rectangles and have them move around or be selectable then you have to code all of that from scra...
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Base constructor in C# - Which gets called first? [duplicate]

... Actually, it looks like I spoke too fast. Now I've consulted the spec, and while it says that the constructor-initializer is executed before the constructor-body, that counts as being included in the overall constructor. So you're entirely right from both perspective...
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How do I change an HTML selected option using JavaScript?

... Link to "Fiddler Demo" now results in 404/Page Not Found :-( – Genki Aug 11 '18 at 4:47 1 ...
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How come a non-const reference cannot bind to a temporary object?

...or the very reason that they are temporary objects and will die any moment now. The reason you are allowed to call non-const methods is that, well, you are welcome to do some "stupid" things as long as you know what you are doing and you are explicit about it (like, using reinterpret_cast). But if y...
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Which is faster: while(1) or while(2)?

...human to read! If I see while(1) in an unfamiliar codebase, I immediately know what the author intended, and my eyeballs can continue to the next line. If I see while(2), I'll probably halt in my tracks and try to figure out why the author didn't write while(1). Did the author's finger slip on the ...
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Split a module across several files

...threw out namespacing. Changing one file in a way unrelated to another can now break other files. Your use of 'use' becomes leaky (ie everything is like use super::*). You can't hide code from other files (which is important for unsafe-using safe abstractions) – Demur Rumed ...
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Principles for Modeling CouchDB Documents

I have a question that I've been trying to answer for some time now but can't figure out: 4 Answers ...