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What is a “slug” in Django?
When I read Django code I often see in models what is called a "slug". I am not quite sure what this is, but I do know it has something to do with URLs. How and when is this slug-thing supposed to be used?
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What is the meaning of “this” in Java?
Normally, I use this in constructors only.
21 Answers
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Size-limited queue that holds last N elements in Java
A very simple & quick question on Java libraries: is there a ready-made class that implements a Queue with a fixed maximum size - i.e. it always allows addition of elements, but it will silently remove head elements to accomodate space for newly added elements.
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Getting raw SQL query string from PDO prepared statements
Is there a way to get the raw SQL string executed when calling PDOStatement::execute() on a prepared statement? For debugging purposes this would be extremely useful.
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What does %s mean in a python format string?
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It is a string formatting syntax (which it borrows from C).
Please see "PyFormat":
Python supports formatting values into
strings. Although this can include
very complicated expressions, the most
basic usage is to ins...
Is there a “do … while” loop in Ruby?
I'm using this code to let the user enter in names while the program stores them in an array until they enter an empty string (they must press enter after each name):
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When to use ' (or quote) in Lisp?
After making it through the major parts of an introductory Lisp book, I still couldn't understand what the special operator (quote) (or equivalent ' ) function does, yet this has been all over Lisp code that I've seen.
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Guid is all 0's (zeros)?
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var responseObject = proxy.CallService(new RequestObject
{
Data = "misc. data",
Guid = Guid.NewGuid()
});
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How do I get a class instance of generic type T?
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The short answer is, that there is no way to find out the runtime type of generic type parameters in Java. I suggest reading the chapter about type erasure in the Java Tutorial for more details.
A popular solution to this is to pass the Clas...
What is the native keyword in Java for?
While playing this puzzle (It's a Java keyword trivia game), I came across the native keyword.
10 Answers
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