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Why does the order of the loops affect performance when iterating over a 2D array?

... x[1][0] etc... Meaning that you're hitting them all in order. Now look at the 1st version. You're doing: x[0][0] x[1][0] x[2][0] x[0][1] x[1][...
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git pull while not in a git directory

...ath> is empty, 2015-03-06, Git v2.3.4). That means the documentation now (finally) includes: If '<path>' is present but empty, e.g. -C "", then the current working directory is left unchanged. You can see git -C used with Git 2.26 (Q1 2020), as an example. See commit b441717, co...
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Finding JavaScript memory leaks with Chrome

...e creation of the Backbone View until the click event of the Start button. Now: Run the HTML (saved locally of using this address) and take a snapshot. Click Start to create the view. Take another snapshot. Click remove. Take another snapshot. Filter objects allocated between Snapshots 1 and 2 in ...
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How to use Class in Java?

... what they really do behind the scenes over at this question , so we all know that Vector<int[]> is a vector of integer arrays, and HashTable<String, Person> is a table of whose keys are strings and values Person s. However, what stumps me is the usage of Class<> . ...
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VIM Disable Automatic Newline At End Of File

...rc) (thanks to 罗泽轩 for that last bit of news!): :set nofixendofline Now regarding older versions of vim. Even if the file was already saved with new lines at the end: vim -b file and once in vim: :set noeol :wq done. alternatively you can open files in vim with :e ++bin file Yet another alte...
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Loading Backbone and Underscore using RequireJS

... RequireJS 2.X now organically addresses non-AMD modules such as Backbone & Underscore much better, using the new shim configuration. The shim configuration is simple to use: (1) one states the dependencies (deps), if any, (which may...
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Why use iterators instead of array indices?

...is a concurrent modification to the structure you are accessing, you will know about it. You can't do that with just an integer. – Marcin Oct 21 '08 at 22:25 4 ...
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Why use getters and setters/accessors?

...erns. And what other objects (breaks) the method notifies I don't want to know either. – sbi Aug 24 '12 at 9:35 8 ...
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How to make connection to Postgres via Node.js

...ta , then I started that instance with postgres -D /usr/local/pgsql/data now how can I interact with this through node? For example, what would the connectionstring be, or how am I able to find out what it is. ...
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Numpy where function multiple conditions

...ue, False, False, False, False, False, False, False], dtype=bool) Now you can call np.where on the combined boolean array: In [239]: np.where((dists >= r) & (dists <= r + dr)) Out[239]: (array([10, 11, 12]),) In [240]: dists[np.where((dists >= r) & (dists <= r + dr))] ...