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Syntax behind sorted(key=lambda: …)

...selves are not sorted. Why is this?? Lets read the docs: Key Functions Starting with Python 2.4, both list.sort() and sorted() added a key parameter to specify a function to be called on each list element prior to making comparisons. We have to do a little bit of reading between the lines he...
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How to match all occurrences of a regex

...ssion matching enumerator with named capture support" "How to find out the starting point for each match in ruby" Reading about special variables $&, $', $1, $2 in Ruby will be helpful too. share | ...
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First-time database design: am I overengineering? [closed]

...able hardware. That said, and this relates to your question 3, with the start you have you probably shouldn't really be overly worried about performance or hyper-sensitivity to normalization orthodoxy here. This is a reporting server you are building, not a transaction based application backend,...
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When serving JavaScript files, is it better to use the application/javascript or application/x-javas

...r to be strictly standard's compliant. But until people viewing my website start complaining that "ever since upgrading my browser, about 50% of your website disappeared", I have no motive to change the code in my website. s...
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What blocks Ruby, Python to get Javascript V8 speed? [closed]

... where optimizations could be used (and Unladen Swallow, a Google project, started to implement these before biting the dust). Here are some of the optimizations that they planned. I could see Python gaining V8 speed in the future if a JIT a la PyPy gets implemented for CPython, but that does not se...
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What's the fastest way to loop through an array in JavaScript?

... You have to be careful using this loop. I started using it and had a hard to track bug because of one mistake I made. If you nest two loops like this: jsfiddle.net/KQwmL/1. You have to be careful to name the var len differently in the two loops, otherwise the second ...
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Can a Windows batch file determine its own file name?

...g code. set b=%~0 echo %~n0%b:~8,4% I have learned that ":~8,4%" means start at the 9th character of the variable and then show show the next 4 characters. The range is 0 to the end of the variable string. So %Path% would be very long! fIlEnAmE.bat 012345678901 However, this is not as sound a...
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How to make node.js require absolute? (instead of relative)

.../boop/bar.js, node will look for ./foo.js in /beep/boop/foo.js. Paths that start with a ./ or ../ are always local to the file that calls require(). If however you require a non-relative name such as require('xyz') from /beep/boop/foo.js, node searches these paths in order, stopping at the first ma...
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Sorting a vector of custom objects

... to obtain relative ordering of X elements, have already been posted, I'll start by some notes on "why" and "when" to use the various approaches. The "best" approach will depend on different factors: Is sorting ranges of X objects a common or a rare task (will such ranges be sorted a mutiple diff...
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Android: upgrading DB version and adding new table

...e app after a long time, to a version using database version 7 and the app starts crashing because of certain incompatible changes. Then the updates in the database will be done step-wise, covering all possible cases, i.e. incorporating the changes in the database done for each new version and ther...