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What's the difference between Ruby's dup and clone methods?
The Ruby docs for dup say:
6 Answers
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Java List.contains(Object with field value equal to x)
I want to check whether a List contains an object that has a field with a certain value. Now, I could use a loop to go through and check, but I was curious if there was anything more code efficient.
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Remove duplicate dict in list in Python
I have a list of dicts, and I'd like to remove the dicts with identical key and value pairs.
12 Answers
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Why is Node.js single threaded? [closed]
In PHP (or Java/ASP.NET/Ruby) based webservers every client request is instantiated on a new thread. But in Node.js all the clients run on the same thread (they can even share the same variables!) I understand that I/O operations are event-based so they don't block the main thread loop.
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Different types of thread-safe Sets in Java
There seems to be a lot of different implementations and ways to generate thread-safe Sets in Java.
Some examples include
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Check if list contains any of another list
I have a list of parameters like this:
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Downcasting in Java
Upcasting is allowed in Java, however downcasting gives a compile error.
11 Answers
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How do I find duplicate values in a table in Oracle?
What's the simplest SQL statement that will return the duplicate values for a given column and the count of their occurrences in an Oracle database table?
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NumPy array initialization (fill with identical values)
I need to create a NumPy array of length n , each element of which is v .
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LINQ to SQL Left Outer Join
Is this query equivalent to a LEFT OUTER join?
6 Answers
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