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Performance of Arrays vs. Lists

... Very easy to measure... In a small number of tight-loop processing code where I know the length is fixed I use arrays for that extra tiny bit of micro-optimisation; arrays can be marginally faster if you use the indexer / for form - but IIRC believe it dep...
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Copy constructor for a class with unique_ptr

How do I implement a copy constructor for a class that has a unique_ptr member variable? I am only considering C++11. 6 A...
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Best way to format integer as string with leading zeros? [duplicate]

... @Zelphir you can dynamically create the formatting string, [('{{0:0{0:d}d}}').format(len(my_list)).format(k) for k in my_list] – Mark Aug 28 '15 at 8:31 ...
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In Python, how do I index a list with another list?

...ng, either by integer, slice or index-list: class Flexlist(list): def __getitem__(self, keys): if isinstance(keys, (int, slice)): return list.__getitem__(self, keys) return [self[k] for k in keys] Which, for your example, you would use as: L = Flexlist(['a', 'b', 'c', 'd', 'e...
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Can I define a class name on paragraph using Markdown?

...lt;p class='specialParagraph' markdown='1'> **Another paragraph** which allows *Markdown* within it. </p> Possible Solution: (Untested and intended for <blockquote>) I found the following online: Function function _DoBlockQuotes_callback($matches) { ...cut... //add id a...
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How to perform file system scanning

... will not work for release versions of GO in the near future. There's actually a function in the standard lib just for this: filepath.Walk. package main import ( "path/filepath" "os" "flag" ) type visitor int // THIS CODE NO LONGER WORKS, PLEASE SEE ABOVE func (v visitor) VisitDir(p...
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Why does “pip install” inside Python raise a SyntaxError?

...stalled package so this is the right way of using the API: subprocess.check_call([sys.executable, '-m', 'pip', 'install', 'SomeProject']) but since Python allows to access internal API and you know what you're using the API for you may want to use internal API anyway eg. if you're building own GUI p...
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What's the difference between Git Revert, Checkout and Reset?

...the history. git reset This command is a little more complicated. It actually does a couple of different things depending on how it is invoked. It modifies the index (the so-called "staging area"). Or it changes which commit a branch head is currently pointing at. This command may alter existing h...
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How do I create a variable number of variables?

... answered Sep 3 '09 at 12:41 c_harmc_harm add a comment ...
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Backbone View: Inherit and extend events from parent

...: var ChildView = ParentView.extend({ events: function(){ return _.extend({},ParentView.prototype.events,{ 'click' : 'onclickChild' }); } }); Another would be: var ParentView = Backbone.View.extend({ originalEvents: { 'click': 'onclick' }, //Override th...