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How to create a hash or dictionary object in JavaScript [duplicate]

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Standardize data columns in R

...@agstudy Fair enough. I should get in the habit of using colMeans/colSums more. I guess I don't think of it unless I'm in a situation where it actually matters... – Dason Mar 5 '13 at 3:54 ...
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What is the most frequent concurrency issue you've encountered in Java? [closed]

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Is it possible to declare two variables of different types in a for loop?

...++11: std::make_pair allows you to do this, as well as std::make_tuple for more than two objects. for (auto p = std::make_pair(5, std::string("Hello World")); p.first < 10; ++p.first) { std::cout << p.second << std::endl; } std::make_pair will return the two arguments in a std:...
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How to Display Selected Item in Bootstrap Button Dropdown Title

...n(){});" is equivilant to "$(document).ready(function() {});" you can find more information here:api.jquery.com/ready – Jai Nov 18 '12 at 12:11 1 ...
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How do I measure execution time of a command on the Windows command line?

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Append a NumPy array to a NumPy array

... numpy.vstack can accept more than 2 arrays in the sequence argument. Thus if you need to combine more than 2 arrays, vstack is more handy. – ruhong Oct 22 '15 at 12:57 ...
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How to programmatically take a screenshot on Android?

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Is element block level or inline level?

... It's true, they are both - or more precisely, they are "inline block" elements. This means that they flow inline like text, but also have a width and height like block elements. In CSS, you can set an element to display: inline-block to make it replicate...
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Variable name as a string in Javascript

... of obj are printed as name: value pairs. But the explaining text could be more clear. – Matt Apr 20 '18 at 9:23 ...