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How to find the statistical mode?
...}
On my dinky little machine, that can generate & find the mode of a 10M-integer vector in about half a second.
If your data set might have multiple modes, the above solution takes the same approach as which.max, and returns the first-appearing value of the set of modes. To return all modes,...
How to check whether a file or directory exists?
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edited Jun 28 '18 at 10:42
Cœur
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Path.Combine for URLs?
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edited Apr 7 at 10:48
Selim Yildiz
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Setting default values for columns in JPA
... annotation, for example:
@Column(name="Price", columnDefinition="Decimal(10,2) default '100.00'")
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Return a value if no rows are found in Microsoft tSQL
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answered Apr 21 '10 at 2:16
Adam RobinsonAdam Robinson
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filter items in a python dictionary where keys contain a specific string
...rs♦
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answered May 26 '14 at 3:49
Jonathon ReinhartJonathon Reinhart
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The performance impact of using instanceof in Java
...have been covered?
– Ravisha
Dec 3 '10 at 9:50
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Always there's someone, who cites Knuth when p...
Get DOS path instead of Windows path
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answered Oct 29 '10 at 11:02
TimboTimbo
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Summarizing multiple columns with dplyr? [duplicate]
...library(purrrlyr)
library(data.table)
library(bench)
set.seed(123)
n <- 10000
df <- data.frame(
a = sample(1:5, n, replace = TRUE),
b = sample(1:5, n, replace = TRUE),
c = sample(1:5, n, replace = TRUE),
d = sample(1:5, n, replace = TRUE),
grp = sample(1:3, n, replace = TRUE)
)
d...
How to replace a string in a SQL Server Table Column
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