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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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Adding devices to team provisioning profile

...lt. So add your device through the portal and hit refresh - your device is now auto-magically attached to your provisioning profile. – thattyson Aug 5 '15 at 20:28 3 ...
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How do you 'redo' changes after 'undo' with Emacs?

...e that looks like this: Insert "foo" Insert "bar" Insert "I love spam" Now, you undo. It undoes the last action, resulting in the following list: Insert "foo" Insert "bar" If you do something other than undo at this point - say, C-f, the operation stack looks like this: Insert "foo" Inser...
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Python name mangling

...ntation, then it is encapsulated (in the opinion of a Python programmer). Now, if you wrote your class in such a way you can use it without having to think about implementation details, there is no problem if you want to look inside the class for some reason. The point is: your API should be good a...
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How to parse/read a YAML file into a Python object? [duplicate]

...e_load instead load dataMap = yaml.safe_load(f) The variable dataMap now contains a dictionary with the tree data. If you print dataMap using PrettyPrint, you will get something like: {'treeroot': {'branch1': {'branch1-1': {'name': 'Node 1-1'}, 'name': 'Node 1'}, 'branch2': {'branch2-...
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What is std::string::c_str() lifetime?

...use the strings are not modified while in that scope. (However, we don't know what use_foo() or ~Foo() might be doing with those values; if they copy the strings elsewhere, then they should do a true copy, and not just copy the char pointers.) ...
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What is the difference between google tag manager and google analytics?

... they used, which pages were the most popular, etc. The only way it can know this stuff is if you put a "tag" on all of your pages. The tag is the javascript code on your pages that runs on the visitor's browser, which tells Google Analytics' servers that they are visiting the page right now. Th...
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How can I find the number of days between two Date objects in Ruby?

...conds, such as this example 2.0.0-p195 :017 > a_date_time = DateTime.now => #<DateTime: 2013-12-31T12:23:03-08:00 ((2456658j,73383s,725757000n),-28800s,2299161j)> 2.0.0-p195 :018 > b_date_time = DateTime.now-20 => #<DateTime: 2013-12-11T12:23:06-08:00 ((2456638j,73386s,699...
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How to shrink the .git folder

...ant to add the "-f" flag (which is the "drop all old deltas", since you now are actually trying to make sure that this one actually finds good candidates. source: http://gcc.gnu.org/ml/gcc/2007-12/msg00165.html Will this get rid of binary data that is orphaned in my repo? "git repack" will ...
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What's the difference between Require.js and simply creating a element in the DOM? [closed]

... I had read those, but now that I think about it more I realize that the idea of nested dependencies cannot be achieved by simply writing <script> tags. Thanks. – maxedison Feb 6 '11 at 18:53 ...