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Use of ~ (tilde) in R programming Language
I saw in a tutorial about regression modeling the following command :
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How to reliably open a file in the same directory as a Python script
I used to open files that were in the same directory as the currently running Python script by simply using a command like
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How do I use extern to share variables between source files?
I know that global variables in C sometimes have the extern keyword. What is an extern variable? What is the declaration like? What is its scope?
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Why does make think the target is up to date?
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How to use a custom comparison function in Python 3?
In Python 2.x , I could pass custom function to sorted and .sort functions
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What is a provisioning profile used for when developing iPhone applications?
...a provisioning profile and why is it needed when developing an iPhone application? If I don't have a provisioning profile, what happens?
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SQL Add foreign key to existing column
If I am using the following SQL command in SQL Server 2008 to update a table with a foreign key constraint:
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Difference between std::result_of and decltype
I have some trouble understanding the need for std::result_of in C++0x. If I understood correctly, result_of is used to obtain the resulting type of invoking a function object with certain types of parameters. For example:
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Get position of UIView in respect to its superview's superview
I have a UIView, in which I have arranged UIButtons. I want to find the positions of those UIButtons.
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Best way to work with transactions in MS SQL Server Management Studio
Let's say I have an SQL statement that's syntactically and semantically correct so it executes.
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