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Qt events and signal/slots
In the Qt world, what is the difference of events and signal/slots?
10 Answers
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When should you branch?
When working with a SCM system, when should you branch?
12 Answers
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How to automatically install Ansible Galaxy roles?
All my Ansible playbooks/roles are checked in to my git repo.
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What is a “translation unit” in C++
I am reading at the time the "Effective C++" written by Meyers
and came across the term "translation unit".
11 Answers
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Is a Java hashmap search really O(1)?
I've seen some interesting claims on SO re Java hashmaps and their O(1) lookup time. Can someone explain why this is so? Unless these hashmaps are vastly different from any of the hashing algorithms I was bought up on, there must always exist a dataset that contains collisions.
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Understanding dict.copy() - shallow or deep?
While reading up the documentation for dict.copy() , it says that it makes a shallow copy of the dictionary. Same goes for the book I am following (Beazley's Python Reference), which says:
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Principal component analysis in Python
I'd like to use principal component analysis (PCA) for dimensionality reduction. Does numpy or scipy already have it, or do I have to roll my own using numpy.linalg.eigh ?
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Quickly create large file on a Windows system
In the same vein as Quickly create a large file on a Linux system ,
I'd like to quickly create a large file on a Windows system. By large I'm thinking 5 GB. The content doesn't matter. A built-in command or short batch file would be preferable, but I'll accept an application if there are no other...
Need for predictable random generator
I'm a web-game developer and I got a problem with random numbers. Let's say that a player has 20% chance to get a critical hit with his sword. That means, 1 out of 5 hits should be critical. The problem is I got very bad real life results — sometimes players get 3 crits in 5 hits, sometimes none i...
When to use nested classes and classes nested in modules?
I'm pretty familiar with when to use subclasses and modules, but more recently I've been seeing nested classes like this:
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