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Update relationships when saving changes of EF4 POCO objects
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145
Let's try it this way:
Attach BlogPost to context. After attaching object to context the sta...
How to succinctly write a formula with many variables from a data frame?
...in a formula to mean all the variables, it is the . identifier.
y <- c(1,4,6)
d <- data.frame(y = y, x1 = c(4,-1,3), x2 = c(3,9,8), x3 = c(4,-4,-2))
mod <- lm(y ~ ., data = d)
You can also do things like this, to use all variables but one (in this case x3 is excluded):
mod <- lm(y ~ ...
Attach IntelliJ IDEA debugger to a running Java process
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edited Jun 24 '16 at 15:31
answered Jun 11 '15 at 23:27
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In Xcode, how to suppress all warnings in specific source files?
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edited Oct 11 '18 at 1:20
answered Aug 3 '11 at 5:19
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How can I define a composite primary key in SQL?
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231
Just for clarification: a table can have at most one primary key. A primary key consists of one ...
Weird “[]” after Java method signature
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111
It's a method that returns an int[].
Java Language Specification (8.4 Method Declarations)...
Default initialization of std::array?
With C++11 std::array , do I have the guarantee that the syntax std::array<T, N> x; will default-initialize all the elements of the array ?
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How can I apply styles to multiple classes at once?
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edited Jan 16 '17 at 16:19
TylerH
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jQuery empty() vs remove()
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160
empty() will empty the selection of its contents, but preserve the selection itself.
remove()...
Drop a temporary table if it exists
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From SQL Server 2016 you can just use
DROP TABLE IF EXISTS ##CLIENTS_KEYWORD
On previous versions you can use
IF OBJECT_ID('tempdb..##CLIENTS_KEYWORD', 'U') IS NOT NULL
/*Then it exists*/
DROP TABLE ##CLIENTS_KEYWORD
CREATE TABLE ##CLIENT...