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How can I convert immutable.Map to mutable.Map in Scala?
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128
The cleanest way would be to use the mutable.Map varargs factory. Unlike the ++ approach, thi...
Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
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190
There are many ways to do this. This answer starts with what is quickly becoming the standard...
css transform, jagged edges in chrome
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11 Answers
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How can I access and process nested objects, arrays or JSON?
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1208
Preliminaries
JavaScript has only one data type which can contain multiple values: Object. A...
Find most frequent value in SQL column
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SELECT `column`,
COUNT(`column`) AS `value_occurrence`
FROM `my_ta...
What does SQL clause “GROUP BY 1” mean?
...QL query where the GROUP BY clause consisted of the statement: GROUP BY 1 .
6 Answers
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Does .NET provide an easy way convert bytes to KB, MB, GB, etc.?
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197
Here is a fairly concise way to do this:
static readonly string[] SizeSuffixes =
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Check if a file exists with wildcard in shell script [duplicate]
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21 Answers
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Efficient way to rotate a list in python
... dedicated rotate() method.
from collections import deque
items = deque([1, 2])
items.append(3) # deque == [1, 2, 3]
items.rotate(1) # The deque is now: [3, 1, 2]
items.rotate(-1) # Returns deque to original state: [1, 2, 3]
item = items.popleft() # deque == [2, 3]
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