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Why does Python use 'magic methods'?
I've been playing around with Python recently, and one thing I'm finding a bit odd is the extensive use of 'magic methods', e.g. to make its length available, an object implements a method, def __len__(self) , and then it is called when you write len(obj) .
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Difference between binary semaphore and mutex
...identical, and a toilet is unlocked using a key, and there is no other mechanism to distribute cubicle usage, then: (1) the first user unlocks, enters and starts to use the first cubicle. (2) the next user unlocks, enters and starts to use the first cubicle...
– Technophile
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Why return NotImplemented instead of raising NotImplementedError
Python has a singleton called NotImplemented .
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Button in a column, getting the row from which it came on the Click event handler
...eter may not be the property's intended use, but semantically, it's more meaningful than using Tag and simpler than retrieving the ID from the bound object in the handler. If you prefer Commands, that approach is fine, but why add the complexity if you're not going to use it?
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Remote debugging a Java application
I have a java application running on linux machine. I run the java application using the following:
6 Answers
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Why do you have to link the math library in C?
If I include <stdlib.h> or <stdio.h> in a C program I don't have to link these when compiling but I do have to link to <math.h> , using -lm with gcc, for example:
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What is MOJO in Maven?
I'm reading about Maven right now and everywhere in a text I see this word (mojo). I approximately understand what it means, but I would not refuse from a good explanation. I tried to google, but found only non-maven explanations.
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Entity Framework - Start Over - Undo/Rollback All Migrations
For some reason, my migrations appear to have been jumbled/corrupted/whatever. I'm at the point where I just want to start over, so is there a way to completely undo all migrations, erase the history, and delete the migration code, so I'm back to square one?
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Can I simultaneously declare and assign a variable in VBA?
I'm new to VBA and want to know if I can convert the following declaration and assignment into one line:
5 Answers
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Is it possible to make abstract classes in Python?
How can I make a class or method abstract in Python?
12 Answers
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