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What does a just-in-time (JIT) compiler do?

What does a JIT compiler specifically do as opposed to a non-JIT compiler? Can someone give a succinct and easy to understand description? ...
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Best way to do nested case statement logic in SQL Server

I'm writing an SQL Query, where a few of the columns returned need to be calculated depending on quite a lot of conditions. ...
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Is recursion a feature in and of itself?

...or is it just a practice? 9 Answers 9 ...
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Returning unique_ptr from functions

unique_ptr<T> does not allow copy construction, instead it supports move semantics. Yet, I can return a unique_ptr<T> from a function and assign the returned value to a variable. ...
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What's the scope of a variable initialized in an if statement?

I'm new to Python, so this is probably a simple scoping question. The following code in a Python file (module) is confusing me slightly: ...
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What is default color for text in textview?

I set the color to red , and after that I want to set the color again back to default, but I do not know what is default color, does anyone knows ? ...
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CAP theorem - Availability and Partition Tolerance

While I try to understand the "Availability" (A) and "Partition tolerance" (P) in CAP, I found it difficult to understand the explanations from various articles. ...
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How to delete a workspace in Perforce (using p4v)?

I'm new to Perforce and have created a few workspaces as exercises for getting familiar with it. Now I would like to delete some of the workspaces. I just want to get rid of the workspaces so that they do not appear on the drop-down in the workspaces view ( do not want to do anything with actual de...
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Check if a value exists in pandas dataframe index

I am sure there is an obvious way to do this but cant think of anything slick right now. 6 Answers ...