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Append a dictionary to a dictionary [duplicate]
...hat if extra and orig have overlapping keys, the final value will be taken from extra. For example,
>>> d1 = {1: 1, 2: 2}
>>> d2 = {2: 'ha!', 3: 3}
>>> d1.update(d2)
>>> d1
{1: 1, 2: 'ha!', 3: 3}
...
mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435 }
...t "slave okay" mode to let the mongo shell know that you're allowing reads from a secondary. This is to protect you and your applications from performing eventually consistent reads by accident. You can do this in the shell with:
rs.slaveOk()
After that you can query normally from secondaries.
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Git: copy all files in a directory from another branch
How do I copy all files in a directory from another branch? I can list all of the files in that directory by doing
2 Answe...
Reload Flask app when template file changes
... need the application to restart to be refreshed, as they should be loaded from disk everytime render_template() is called. Maybe your templates are used differently though.
To reload your application when the templates change (or any other file), you can pass the extra_files argument to Flask().ru...
Why is it slower to iterate over a small string than a small list?
...ter strings are cached.
The difference is unobvious, but is likely created from a greater number of checks on string indexing, with regards to the type and well-formedness. It is also quite likely thanks to the need to check what to return.
List indexing is remarkably fast.
>>> python...
What is the difference between the bridge pattern and the strategy pattern?
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Semantics. From wikipedia:
The UML class diagram for the Strategy
pattern is the same as the diagram for
the Bridge pattern. However, these two
design patterns aren't the same in
their intent. While the Strategy
pattern is...
Find region from within an EC2 instance
Is there a way to look up the region of an instance from within the instance?
28 Answers
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How do I remove the old history from a git repository?
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Quoted from the linked wiki page on grafts. "As of Git 1.6.5, the more flexible git replace has been added, which allows you to replace any object with any other object, and tracks the associations via refs which can be pushed and p...
Event Signature in .NET — Using a Strong Typed 'Sender'? [closed]
... a poor idea for this reason alone. However, I would like to consider this from two possible perspectives:
11 Answers
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Can I call an overloaded constructor from another constructor of the same class in C#?
Can I call an overloaded constructor from another constructor of the same class in C#?
4 Answers
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