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Multiple columns index when using the declarative ORM extension of sqlalchemy
...my.Column class, we should use the class sqlalchemy.schema.Index to specify an index that contains multiple columns.
2 A...
What does git push origin HEAD mean?
...Also it prevents you from pushing to the wrong remote branch by accident.
If you want to push a different branch than the current one the command will not work.
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invalid byte sequence for encoding “UTF8”
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If you need to store UTF8 data in your database, you need a database that accepts UTF8. You can check the encoding of your database in pgAdmin. Just right-click the database, and select "Properties".
But that error seems to ...
Python mock multiple return values
...;> m()
'bar'
>>> m()
'baz'
Quoting the Mock() documentation:
If side_effect is an iterable then each call to the mock will return the next value from the iterable.
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How do you disable the unused variable warnings coming out of gcc in 3rd party code I do not wish to
...itch usually does the trick. However, that is a very useful warning indeed if you care about these things in your project. It becomes annoying when GCC starts to warn you about things not in your code though.
I would recommend you keeping the warning on, but use -isystem instead of -I for include d...
Hidden Features of Visual Studio (2005-2010)?
... This (called "block select") also works with the keyboard- hold alt+shift then use the arrow keys.
– arolson101
Oct 16 '09 at 16:42
1
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What is the purpose of “return await” in C#?
...case when return in normal method and return await in async method behave differently: when combined with using (or, more generally, any return await in a try block).
Consider these two versions of a method:
Task<SomeResult> DoSomethingAsync()
{
using (var foo = new Foo())
{
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What happens to global and static variables in a shared library when it is dynamically linked?
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This is a pretty famous difference between Windows and Unix-like systems.
No matter what:
Each process has its own address space, meaning that there is never any memory being shared between processes (unless you use some inter-process communicatio...
Is there a short contains function for lists?
I see people are using any to gather another list to see if an item exists in a list, but is there a quick way to just do?:
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Will GetType() return the most derived type when called from the base class?
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GetType() will return the actual, instantiated type. In your case, if you call GetType() on an instance of B, it will return typeof(B), even if the variable in question is declared as a reference to an A.
There is no reason for your GetSubType() method.
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