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mongodb group values by multiple fields
For example, I have these documents:
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Setting an object to null vs Dispose()
...etely separate things, with one point in common which I'll come to in a minute.
Dispose, garbage collection and finalization
When you write a using statement, it's simply syntactic sugar for a try/finally block so that Dispose is called even if the code in the body of the using statement throws a...
Catching error codes in a shell pipe
I currently have a script that does something like
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Flask vs webapp2 for Google App Engine
I'm starting new Google App Engine application and currently considering two frameworks: Flask and webapp2 . I'm rather satisfied with built-in webapp framework that I've used for my previous App Engine application, so I think webapp2 will be even better and I won't have any problems with it.
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Reading output of a command into an array in Bash
I need to read the output of a command in my script into an array. The command is, for example:
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Tying in to Django Admin's Model History
The Setup:
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Method Resolution Order (MRO) in new-style classes?
In the book Python in a Nutshell (2nd Edition) there is an example which uses
old style classes to demonstrate how methods are resolved in classic resolution order and
how is it different with the new order.
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git stash blunder: git stash pop and ended up with merge conflicts
I did a git stash pop and ended up with merge conflicts. I removed the files from the file system and did a git checkout as shown below, but it thinks the files are still unmerged. I then tried replacing the files and doing a git checkout again and same result. I event tried forcing it with -...
Why in Java 8 split sometimes removes empty strings at start of result array?
...g.split (which calls Pattern.split) changes between Java 7 and Java 8.
Documentation
Comparing between the documentation of Pattern.split in Java 7 and Java 8, we observe the following clause being added:
When there is a positive-width match at the beginning of the input sequence then an empty...
What is data oriented design?
I was reading this article , and this guy goes on talking about how everyone can greatly benefit from mixing in data oriented design with OOP. He doesn't show any code samples, however.
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