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How do I detach objects in Entity Framework Code First?
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saluce
11.4k33 gold badges4444 silver badges6363 bronze badges
answered Apr 8 '11 at 20:00
Ladislav MrnkaLadisl...
How to change column datatype from character to numeric in PostgreSQL 8.4
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242
You can try using USING:
The optional USING clause specifies how to compute the new column ...
Remove an Existing File from a Git Repo
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143
Just to give the full answer all at once:
from klemens: You need to add the file to your .git...
Difference between git pull and git pull --rebase
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edited May 23 '17 at 11:47
Community♦
111 silver badge
answered Sep 21 '13 at 8:28
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Rails mapping array of hashes onto single hash
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4 Answers
4
Active
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How to drop columns by name in a data frame
... function. For example :
R> df <- data.frame(x=1:5, y=2:6, z=3:7, u=4:8)
R> df
x y z u
1 1 2 3 4
2 2 3 4 5
3 3 4 5 6
4 4 5 6 7
5 5 6 7 8
Then you can use the which function and the - operator in column indexation :
R> df[ , -which(names(df) %in% c("z","u"))]
x y
1 1 2
2 2 3
3 3 4...
Rounding DateTime objects
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edited Apr 8 '10 at 11:49
answered Sep 8 '09 at 12:27
tv...
Change MySQL default character set to UTF-8 in my.cnf?
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431
To set the default to UTF-8, you want to add the following to my.cnf
[client]
default-charact...
Use IntelliJ to generate class diagram
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answered Jan 20 '12 at 14:29
CrazyCoderCrazyCoder
331k126126 gold badges839839 silver badges763763 bronze badges
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Ruby/Rails: converting a Date to a UNIX timestamp
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354
The code date.to_time.to_i should work fine. The Rails console session below shows an example:
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