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Why are arrays covariant but generics are invariant?
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Via wikipedia:
Early versions of Java and C# did not include generics (a.k.a. parametric polymorphism).
In such a setting, making arrays invariant rules out useful polymorphic programs.
For example, consider writing a fu...
Locking a file in Python
I need to lock a file for writing in Python. It will be accessed from multiple Python processes at once. I have found some solutions online, but most fail for my purposes as they are often only Unix based or Windows based.
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How do I get time of a Python program's execution?
I have a command line program in Python that takes a while to finish. I want to know the exact time it takes to finish running.
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What's the difference between StaticResource and DynamicResource in WPF?
... Expression object to the property during loading but does not actually lookup the resource until runtime when the Expression object is asked for the value. This defers looking up the resource until it is needed at runtime. A good example would be a forward reference to a resource defined later on i...
How do I install a NuGet package .nupkg file locally?
I have some .nupkg files from a C# book. How can I install them?
8 Answers
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How to overcome “datetime.datetime not JSON serializable”?
...f you want a generic Python solution for serializing datetime to json, check out @jjmontes' answer for a quick solution which requires no dependencies.
As you are using mongoengine (per comments) and pymongo is a dependency, pymongo has built-in utilities to help with json serialization:
http://a...
Android Google Maps v2 - set zoom level for myLocation
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It's doubtful you can change it on click with the default myLocation Marker. However, if you would like the app to automatically zoom in on your location once it is found, I would check out my answer to this question
Note that the answer I provided does not zoom...
Git push branch from one remote to another?
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A quick test making some temporary repositories shows you can construct a refspec that can do this:
$ git push rorg origin/one:refs/heads/one
Counting objects: 5, done.
Writing objects: 100% (3/3), 240 bytes, done.
Total 3 (delta ...
How can I center an absolutely positioned element in a div?
...r of my window. But I am having problems doing so, because the width is unknown .
35 Answers
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Writing a git post-receive hook to deal with a specific branch
Here's my current hook in a bare repo that lives in the company's server:
git push origin master
This hooks pushes to Assembla.
What i need is to push only one branch (master, ideally) when someone pushes changes to that branch on our server, and ignore pushes to other branches. Is it possible to...