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Favorite Django Tips & Features?
...fferent locations. Use the following code in settings.py if your templates and static files are located within the Django project directory:
# settings.py
import os
PROJECT_DIR = os.path.dirname(__file__)
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STATIC_DOC_ROOT = os.path.join(PROJECT_DIR, "static")
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TEMPLATE_DIRS = (
os.path.jo...
How do I enable/disable log levels in Android?
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A common way is to make an int named loglevel, and define its debug level based on loglevel.
public static int LOGLEVEL = 2;
public static boolean ERROR = LOGLEVEL > 0;
public static boolean WARN = LOGLEVEL > 1;
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public static boolean VERBOSE = LOGLEVEL > 4;
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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
I'm putting in some effort to learn Python, and I am paying close attention to common coding standards. This may seem like a pointlessly nit-picky question, but I am trying to focus on best-practices as I learn, so I don't have to unlearn any 'bad' habits.
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Naming convention - underscore in C++ and C# variables
..., its use is always somewhat different to each person. Here's how I understand them for the two languages in question:
In C++, an underscore usually indicates a private member variable.
In C#, I usually see it used only when defining the underlying private member variable for a public property. Ot...
What does a b prefix before a python string mean?
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This is Python3 bytes literal. This prefix is absent in Python 2.5 and older (it is equivalent to a plain string of 2.x, while plain string of 3.x is equivalent to a literal with u prefix in 2.x). In Python 2.6+ it is equivalent to a plain string, for compatibility with 3.x.
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Rails 3 datatypes?
...ed in rails 3? (such as text, string, integer, float, date, etc.?) I keep randomly learning about new ones, but I'd love to have a list I could easily refer to.
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Javascript: Setting location.href versus location
...u can usually omit the window. too.
URL assignments to both location.href and location are defined to work in JavaScript 1.0, back in Netscape 2, and have been implemented in every browser since. So take your pick and use whichever you find clearest.
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How to check if an object is nullable?
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There are two types of nullable - Nullable<T> and reference-type.
Jon has corrected me that it is hard to get type if boxed, but you can with generics:
- so how about below. This is actually testing type T, but using the obj parameter purely for generic type inference ...
How to print out the method name and line number and conditionally disable NSLog?
I'm doing a presentation on debugging in Xcode and would like to get more information on using NSLog efficiently.
13 Answer...
Pure virtual function with implementation
My basic understanding is that there is no implementation for a pure virtual function, however, I was told there might be implementation for pure virtual function.
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