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Order data frame rows according to vector with specific order
...work as long as your target contains exactly the same elements as df$name, and neither contain duplicate values.
From ?match:
match returns a vector of the positions of (first) matches of its first argument
in its second.
Therefore match finds the row numbers that matches target's elements, and...
How to work offline with TFS
Our TFS server has some temporary connectivity issues right now, and as such VS has gone unresponsive, leaving 50+ developers unable to work!
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Java equivalent to #region in C#
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There's no such standard equivalent. Some IDEs - Intellij, for instance, or Eclipse - can fold depending on the code types involved (constructors, imports etc.), but there's nothing quite like #region.
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How do 20 questions AI algorithms work?
...nstead of taking into account all questions which have been answered, you randomly pick a smaller subset, which is enough to give you a single answer. Now you repeat that a few times with different random subset of questions, till you see that most of the time, you are getting the same result. you t...
HTML5 Audio stop function
...the <audio> keeps loading also with preload attribute forced to none and the <source>'s src stripped out.
– Pioneer Skies
Dec 2 '15 at 11:34
6
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What is the difference between synchronous and asynchronous programming (in node.js)
I've been reading nodebeginner
And I came across the following two pieces of code.
10 Answers
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Rounding float in Ruby
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Keep in mind that 2.3000.round(2) => 2.3 and sprintf '%.2f', 2.300 => 2.30. In my opinion this is a flaw in round(), or it should have an option to preserve trailing zeros.
– Excalibur
Feb 11 '14 at 17:06
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How do I build a graphical user interface in C++? [closed]
All of my C++ programs so far have been using the command line interface and the only other language I have experience with is PHP which doesn't support GUIs.
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What is the purpose of class methods?
I'm teaching myself Python and my most recent lesson was that Python is not Java , and so I've just spent a while turning all my Class methods into functions.
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How can I quickly sum all numbers in a file?
I have a file which contains several thousand numbers, each on it's own line:
33 Answers
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