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What is the difference between \r and \n?
How are \r and \n different? I think it has something to do with Unix vs. Windows vs. Mac, but I'm not sure exactly how they're different, and which to search for/match in regexes.
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Useless use of cat?
This is probably in many FAQs - instead of using:
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Insert, on duplicate update in PostgreSQL?
Several months ago I learned from an answer on Stack Overflow how to perform multiple updates at once in MySQL using the following syntax:
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What does Expression.Quote() do that Expression.Constant() can’t already do?
Note: I am aware of the earlier question “What is the purpose of LINQ's Expression.Quote method?” , but if you read on you will see that it doesn’t answer my question.
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What's the best way to do a backwards loop in C/C#/C++?
I need to move backwards through an array, so I have code like this:
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How to achieve function overloading in C?
Is there any way to achieve function overloading in C? I am looking at simple functions to be overloaded like
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Adding a column to a data.frame
I have the data.frame below. I want to add a column that classifies my data according to column 1 ( h_no ) in that way that the first series of h_no 1,2,3,4 is class 1, the second series of h_no (1 to 7) is class 2 etc. such as indicated in the last column.
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How to add a touch event to a UIView?
How do I add a touch event to a UIView?
I try:
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What does the restrict keyword mean in C++?
I was always unsure, what does the restrict keyword mean in C++?
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How to randomly select an item from a list?
Assume I have the following list:
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