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Use 'import module' or 'from module import'?

... to a module. Granted this may not be very common, but I've needed it from time to time. Due to the way references and name binding works in Python, if you want to update some symbol in a module, say foo.bar, from outside that module, and have other importing code "see" that change, you have to imp...
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Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?

... than assigning a single literal, which would be bounds-checked at compile-time. It is the out-of-bounds literal that causes the error, not the assignment: System.out.println(2147483648); // error System.out.println(2147483647 + 1); // no error By contrast a long literal would compile ...
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How to split a long regular expression into multiple lines in JavaScript?

I have a very long regular expression, which I wish to split into multiple lines in my JavaScript code to keep each line length 80 characters according to JSLint rules. It's just better for reading, I think. Here's pattern sample: ...
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How does the bitwise complement operator (~ tilde) work?

Why is it that ~2 is equal to -3? How does ~ operator work? 15 Answers 15 ...
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How do you tell if caps lock is on using JavaScript?

How do you tell if caps lock is on using JavaScript? 31 Answers 31 ...
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What is a stream?

...in sequential order. Typical operations on a stream: read one byte. Next time you read, you'll get the next byte, and so on. read several bytes from the stream into an array seek (move your current position in the stream, so that next time you read you get bytes from the new position) write one by...
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What are the main uses of yield(), and how does it differ from join() and interrupt()?

...ty) will get a chance to run before the yielded thread is next given CPU time. When it is eventually re-scheduled, it will come back with a full full quantum, but doesn't "carry over" any of the remaining quantum from the time of yielding. This behaviour is a little different from a non-zero...
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Twitter Bootstrap alert message close and open again

... class="close" data-ng-click="vm.result = null" aria-hidden="true">×</button> <strong>Error ! </strong>{{vm.exception}} </div> works for me and stops the need to go out to jquery ...
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Access-Control-Allow-Origin wildcard subdomains, ports and protocols

... this is useful, I spent time on CORS issue until I realised my site had "www" in the ajax, but not in the permalink structure - your solution helped me understand where the issue was and solved that for me. – Sol ...
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How do you deal with configuration files in source control?

...ally on one a private testing branch (e.g. B' = B + customizations). Each time mainline advances, they effortlessly merge it into testing, which results in merge commits such as D' (= D + merged version of B's customizations). This scheme really shines when the "template" config file is updated: t...