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Return Boolean Value on SQL Select Statement
... the 'WHILE' ?
– full_prog_full
Mar 10 '16 at 16:06
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How can I measure the speed of code written in PHP? [closed]
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10 Answers
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SQL - many-to-many table primary key
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answered Feb 3 '10 at 7:20
paxdiablopaxdiablo
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How do I test for an empty JavaScript object?
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edited Aug 29 '14 at 10:30
mb21
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answered ...
Algorithm for creating a school timetable
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edited Feb 1 '10 at 17:46
answered Feb 1 '10 at 17:11
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Remove duplicated rows using dplyr
...ow:
library(dplyr)
set.seed(123)
df <- data.frame(
x = sample(0:1, 10, replace = T),
y = sample(0:1, 10, replace = T),
z = 1:10
)
One approach would be to group, and then only keep the first row:
df %>% group_by(x, y) %>% filter(row_number(z) == 1)
## Source: local data frame [...
Split a python list into other “sublists” i.e smaller lists [duplicate]
I have a python list which runs into 1000's. Something like:
3 Answers
3
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How to extract extension from filename string in Javascript? [duplicate]
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Java ArrayList replace at specific index
... that.
– Bionix1441
Sep 4 '17 at 11:10
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Generate random numbers with a given (numerical) distribution
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answered Nov 24 '10 at 12:15
Sven MarnachSven Marnach
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