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How to reorder data.table columns (without copying)
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Use setcolorder():
library(data.table)
x <- data.table(a = 1:3, b = 3:1, c = runif(3))
x
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Convert a byte array to integer in Java and vice versa
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8 Answers
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How does the following LINQ statement work?
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The output is 2,4,6,8 because of deferred execution.
The query is actually executed when the query variable
is iterated over, not when the query variable is created.
This is called deferred execution.
-- Suprotim Agarwal, "Deferred...
How to get row from R data.frame
...topher Bottoms
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answered Aug 13 '09 at 2:23
Matt ParkerMatt Parker
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How do you pass arguments to define_method?
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198
The block that you pass to define_method can include some parameters. That's how your defined m...
Compare DATETIME and DATE ignoring time portion
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Use the CAST to the new DATE data type in SQL Server 2008 to compare just the date portion:
IF CAST(DateField1 AS DATE) = CAST(DateField2 AS DATE)
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How do I read image data from a URL in Python?
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edited May 6 '14 at 8:30
answered May 6 '14 at 8:21
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Get Android API level of phone currently running my application [duplicate]
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7 ECLAIR_MR1 Android 2.1 Eclair
8 FROYO Android 2.2 Froyo
9 GINGERBREAD Android 2.3 Gingerbread
10 GINGERBREAD_MR1 Android 2.3.3 Gingerbread
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$(this).val() not working to get text from span using jquery
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Nick Craver♦Nick Craver
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