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switch() statement usage
...
120
Well, timing to the rescue again. It seems switch is generally faster than if statements.
So t...
When tracing out variables in the console, How to create a new line?
...r Arumugam
75.1k1313 gold badges114114 silver badges129129 bronze badges
1
...
Remove duplicated rows using dplyr
...ction for this purpose.
Original answer below:
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_nu...
Properly close mongoose's connection once you're done
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answered Jan 11 '12 at 3:57
KenanKenan
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Should I use AppDomain.CurrentDomain.BaseDirectory or System.Environment.CurrentDirectory?
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answered Sep 2 '16 at 12:16
hudhud
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...
Equivalent of strace -feopen < command > on mac os X
...66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.6924 13.8962 46.1709 13.2535 46.1709 11.9512V9.17788Z\"/\u003e\u003cpath d=\"M32.492 10.1419C32.492 12.6954 34.1182 14.0484 37.0451 14.0484C39.9723 14.0484 41.5985 12.6954...
How to get 30 days prior to current date?
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answered Jan 12 '12 at 21:41
maericsmaerics
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...
jQuery.parseJSON throws “Invalid JSON” error due to escaped single quote in JSON
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edited Mar 8 '12 at 23:17
answered Feb 16 '10 at 18:49
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In Git, what is the difference between origin/master vs origin master?
... |
edited Sep 16 '19 at 12:17
Community♦
111 silver badge
answered Aug 8 '13 at 22:22
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Check if a table exists in Rails
...?('kittens', 'paws')
– Trip
Oct 26 '12 at 15:34
14
This works for ActiveRecord 3.2.11 drop_table...