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How do I round to the nearest 0.5?
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extempl
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answered Aug 25 '09 at 16:37
John RaschJohn Rasch
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How do you copy the contents of an array to a std::vector in C++ without looping?
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edited Mar 10 '17 at 14:54
phoenix
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answered N...
How can I read and parse CSV files in C++?
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If you don't care about escaping comma and newline,
AND you can't embed comma and newline in quo...
How to test android referral tracking?
...om.google.android.apps.analytics.AnalyticsReceiver
For Google Analytics v4:
com.your.package/com.google.android.gms.analytics.CampaignTrackingReceiver
As Luigi said, you can also leave out the "-n" componentname part, but then every app on your device will receive the referral. This can be a...
How to install latest version of Node using Brew
The latest version of NodeJs right now is 0.4.1
14 Answers
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Calling C/C++ from Python?
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edited Oct 4 '17 at 22:58
Peter Mortensen
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Summarizing multiple columns with dplyr? [duplicate]
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#> 1 1 3.08 2.98 2.98 2.91
#> 2 2 3.03 3.04 2.97 2.87
#> 3 3 2.85 2.95 2.95 3.06
If you want to summarize only certain columns, use summarise_at or summarise_if functions.
Alternatively, the purrrlyr package provides the same functionality:
library(purr...
How to randomize (shuffle) a JavaScript array?
...alue;
}
return array;
}
// Used like so
var arr = [2, 11, 37, 42];
shuffle(arr);
console.log(arr);
Some more info about the algorithm used.
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What is the fastest way to get the value of π?
...are a lot of formulae.
Here is a method that converges quickly — about 14 digits per iteration. PiFast, the current fastest application, uses this formula with the FFT. I'll just write the formula, since the code is straightforward. This formula was almost found by Ramanujan and discovered by Chu...
Shell command to sum integers, one per line?
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43 Answers
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