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Difference between Python's Generators and Iterators

What is the difference between iterators and generators? Some examples for when you would use each case would be helpful. 1...
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How can I use optional parameters in a T-SQL stored procedure?

...hich are optional. Is there a way to create a stored procedure that will handle this? Let's say I have a table with four fields: ID, FirstName, LastName and Title. I could do something like this: ...
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ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al

...ch was causing all sorts of problems. I was inadvertently doing a bitwise AND instead of a logical AND . 6 Answers ...
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What is the Difference Between Mercurial and Git?

I've been using git for some time now on Windows (with msysGit) and I like the idea of distributed source control. Just recently I've been looking at Mercurial (hg) and it looks interesting. However, I can't wrap my head around the differences between hg and git. ...
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What's the difference between git reflog and log?

The man page says that log shows the commit logs and reflog manages reflog information. What exactly is reflog information and what does it have that the log doesn't? The log seems far more detailed. ...
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What's the difference between a single precision and double precision floating point operation?

What is the difference between a single precision floating point operation and double precision floating operation? 11 Answ...
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How many double numbers are there between 0.0 and 1.0?

... 52-bit fraction; between any two adjacent powers of two (inclusive of one and exclusive of the next one), there will therefore be 2 to the 52th power different doubles (i.e., 4503599627370496 of them). For example, that's the number of distinct doubles between 0.5 included and 1.0 excluded, and ex...
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Why doesn't TFS get latest get the latest?

...the ones that the server thinks is already in your workspace. Which to me and just about everyone else on the planet is wrong. See this link: http://blogs.microsoft.co.il/blogs/srlteam/archive/2009/04/13/how-get-latest-version-really-works.aspx The only way to get it to do what you want is to Get...
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What's the difference between a Future and a Promise?

What's the difference between Future and Promise ? They both act like a placeholder for future results, but where is the main difference? ...
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Difference between “or” and || in Ruby? [duplicate]

What's the difference between the or and || operators in Ruby? Or is it just preference? 8 Answers ...