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sqlalchemy: how to join several tables by one query?
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Try this
q = Session.query(
User, Document, DocumentPermissions,
).filter(
User.email == Document.author,
).filter(
Document.name == DocumentPermissions.document,
).filter(
User.email == 'someemail',
).all()
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How do I ignore files in a directory in Git?
...sistent with the way how pathspec works in general in git).
If the pattern does not contain a slash /, git treats it as a shell glob pattern and checks for a match against the pathname relative to the location of the .gitignore file (relative to the toplevel of the work tree if not from a .gitignore...
How do I get an HttpContext object from HttpContextBase in ASP.NET MVC 1?
...pContextWrapper at run-time. The following example illustrates how you can do this. It supposes you have a method called Foo that accepts context as HttpContextBase but then needs to call a method in a third-party assembly (that you may not have the good fortune to modify) that is expecting the cont...
What should I do if two libraries provide a function with the same name generating a conflict?
What should I do if I have two libraries that provide functions with equivalent names?
12 Answers
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How do I disable log messages from the Requests library?
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I found out how to configure requests's logging level, it's done via the standard logging module. I decided to configure it to not log messages unless they are at least warnings:
import logging
logging.getLogger("requests").setLevel(logging.WARNING)
If you wish to apply this setti...
How to make a chain of function decorators?
How can I make two decorators in Python that would do the following?
17 Answers
17
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Convert List to List
...e this work is to iterate over the list and cast the elements. This can be done using ConvertAll:
List<A> listOfA = new List<C>().ConvertAll(x => (A)x);
You could also use Linq:
List<A> listOfA = new List<C>().Cast<A>().ToList();
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Rename multiple files by replacing a particular pattern in the filenames using a shell script [dupli
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An example to help you get off the ground.
for f in *.jpg; do mv "$f" "$(echo "$f" | sed s/IMG/VACATION/)"; done
In this example, I am assuming that all your image files contain the string IMG and you want to replace IMG with VACATION.
The shell automatically evaluates *.jpg to all ...
Why do table names in SQL Server start with “dbo”?
...use the fully qualified name, though there is a slight performance gain in doing so and is considered a best practice. "
– Carl G
Oct 9 '12 at 16:33
7
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What is Angular.noop used for?
I have tried searching it everywhere even on Angular.org documentation but couldn't find any detailed explanation with implementation. It would be hugely helpful if any could explain it.
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