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Correct way to use get_or_create?
...f the fields have to be included in defaults. In case CREATE event occurs, all the fields are taken into consideration.
It looks like you need to be returning into a tuple, instead of a single variable, do like this:
customer.source,created = Source.objects.get_or_create(name="Website")
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How to install a specific version of a ruby gem?
Using the command-line gem tool, how can I install a specific version of a gem?
6 Answers
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@selector() in Swift?
... NOT in 'The Swift Programming Language' book.
– user1040049
Jun 3 '14 at 20:32
10
This should pr...
How to get IntPtr from byte[] in C#
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edited May 20 '10 at 19:17
answered Feb 11 '09 at 16:35
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When do you use the “this” keyword? [closed]
...declare extension methods
To pass parameters between constructors
To internally reassign value type (struct) value.
To invoke an extension method on the current instance
To cast itself to another type
To chain constructors defined in the same class
You can avoid the first usage by not having membe...
Start ssh-agent on login
...a remote Git repo pulling from Bitbucket.com using an SSH alias. I can manually start the ssh-agent on my server but I have to do this every time I login via SSH.
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Remove all special characters from a string in R?
How to remove all special characters from string in R and replace them with spaces ?
3 Answers
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Convert to binary and keep leading zeros in Python
...ction in Python. However, it always removes the leading zeros, which I actually need, such that the result is always 8-bit:
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Is std::unique_ptr required to know the full definition of T?
...s. However shared_ptr and unique_ptr are partial exceptions. Some, but not all of their members can be instantiated with incomplete types. The motivation for this is to support idioms such as pimpl using smart pointers, and without risking undefined behavior.
Undefined behavior can occur when you h...
How do I allow HTTPS for Apache on localhost?
... up HTTPS with a self-signed cert on Apache on localhost, but how do I actually do that? I have no idea at all.
16 Answers
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