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sqlalchemy unique across multiple columns

Let's say that I have a class that represents locations. Locations "belong" to customers. Locations are identified by a unicode 10 character code. The "location code" should be unique among the locations for a specific customer. ...
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Maximum concurrent Socket.IO connections

This question has been asked previously but not recently and not with a clear answer. 5 Answers ...
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What does “mro()” do?

In django.utils.functional.py : 4 Answers 4 ...
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What does the brk() system call do?

According to Linux programmers manual: 8 Answers 8 ...
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Is there an Eclipse line-width marker?

I have a specific project where I need to wrap every code line at 65 characters. I have set up the eclipse Java code formatter properly for this. But what I really want is a vertical line to be drawn in the editor showing where the max line width while I am typing, not just when I run the formmater....
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Is HttpClient safe to use concurrently?

In all the examples I can find of usages of HttpClient , it is used for one off calls. But what if I have a persistent client situation, where several requests can be made concurrently? Basically, is it safe to call client.PostAsync on 2 threads at once against the same instance of HttpClient . ...
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Convert list to tuple in Python

I'm trying to convert a list to a tuple. 6 Answers 6 ...
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RESTful Alternatives to DELETE Request Body

While the HTTP 1.1 spec seems to allow message bodies on DELETE requests, it seems to indicate that servers should ignore it since there are no defined semantics for it. ...
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R - Markdown avoiding package loading messages

I have been using Knitr via R-Studio, and think it is pretty neat. I have a minor issue though. When I source a file in an R-Chunk, the knitr output includes external comments as follows: ...
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How to resize a tableHeaderView of a UITableView?

I'm having trouble resizing a tableHeaderView. It simple doesn't work. 19 Answers 19 ...