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Regex group capture in R with multiple capture-groups
...ringr package, will do this. It returns a character matrix with one column for each group in the match (and one for the whole match):
> s = c("(sometext :: 0.1231313213)", "(moretext :: 0.111222)")
> str_match(s, "\\((.*?) :: (0\\.[0-9]+)\\)")
[,1] [,2] [,3]...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
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Your QuickRandom implementation hasn't really an uniform distribution. The frequencies are generally higher at the lower values while Math.random() has a more uniform distribution. Here's a SSCCE which shows that:
package com.stackoverflow.q14491966;
import java.util.Arrays;...
How to nicely format floating numbers to String without unnecessary decimal 0?
... static String fmt(double d)
{
if(d == (long) d)
return String.format("%d",(long)d);
else
return String.format("%s",d);
}
Produces:
232
0.18
1237875192
4.58
0
1.2345
And does not rely on string manipulation.
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Calculating Pearson correlation and significance in Python
I am looking for a function that takes as input two lists, and returns the Pearson correlation , and the significance of the correlation.
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How many double numbers are there between 0.0 and 1.0?
This is something that's been on my mind for years, but I never took the time to ask before.
6 Answers
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Where can I find a NuGet package for upgrading to System.Web.Http v5.0.0.0?
...was used to deploy the System.Web.Mvc dll (and others) with your web app before NuGet became mainstream.
– Steven Liekens
Jan 28 '16 at 13:46
add a comment
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What ports does RabbitMQ use?
What ports does RabbitMQ Server use or need to have open on the firewall for a cluster of nodes?
4 Answers
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.NET String.Format() to add commas in thousands place for a number
I want to add a comma in the thousands place for a number.
21 Answers
21
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CSS Input with width: 100% goes outside parent's bound
I am trying to make a login form constituted of two input fields with an inset padding, but those two fields always end up exceeding its parent's boundaries; the issue stems from the added inset padding. What could be done in order to rectify this issue?
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How is Math.Pow() implemented in .NET Framework?
I was looking for an efficient approach for calculating a b (say a = 2 and b = 50 ). To start things up, I decided to take a look at the implementation of Math.Pow() function. But in .NET Reflector , all I found was this:
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