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Regex group capture in R with multiple capture-groups
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118
str_match(), from the stringr package, will do this. It returns a character matrix with one co...
Go > operators
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180
The super (possibly over) simplified definition is just that << is used for "times 2" an...
Find the nth occurrence of substring in a string
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21 Answers
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Cartesian product of x and y array points into single array of 2D points
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13 Answers
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Using async/await for multiple tasks
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591
int[] ids = new[] { 1, 2, 3, 4, 5 };
Parallel.ForEach(ids, i => DoSomething(1, i, blogClient)...
Pass a data.frame column name to a function
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109
You can just use the column name directly:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 &...
What do the numbers in a version typically represent (i.e. v1.9.0.1)?
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In version 1.9.0.1:
1: Major revision (new UI, lots of new features, conceptual change, etc.)
9: Minor revision (maybe a change to a search box, 1 feature added, collection of bug fixes)
0: Bug fix release
1: Build number (if used)—...
Behaviour of increment and decrement operators in Python
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1091
++ is not an operator. It is two + operators. The + operator is the identity operator, which ...
Is it safe to use -1 to set all bits to true?
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I recommend you to do it exactly as you have shown, since it is the most straight forward one....