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Covariance and contravariance real world example
...IEnumerable<Teacher> GetTeachers() { ... }
}
public class PersonNameComparer : IComparer<Person>
{
public int Compare(Person a, Person b)
{
if (a == null) return b == null ? 0 : -1;
return b == null ? 1 : Compare(a,b);
}
private int Compare(string a, s...
Order discrete x scale by frequency/value
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How to get rspec-2 to give the full trace associated with a test failure?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
How do I retrieve the number of columns in a Pandas data frame?
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What is the relationship between UIView's setNeedsLayout, layoutIfNeeded and layoutSubviews?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Indentation shortcuts in Visual Studio
I'm new to Visual Studio 2010 and C#. How can I indent the selected text to left/right by using shortcuts?
8 Answers
...
what’s the difference between Expires and Cache-Control headers?
...a caching tutorial that should answer most of your questions (e.g., http://www.mnot.net/cache_docs/#EXPIRES). To sum up though, Expires is recommended for static resources like images and Cache-Control when you need more control over how caching is done.
...
How to fix: “UnicodeDecodeError: 'ascii' codec can't decode byte”
... new Unicode string. The Markdown authors can't know the encoding of the incoming string so will rely on you to decode strings to Unicode strings before passing to Markdown.
Unicode strings can be declared in your code using the u prefix to strings. E.g.
>>> my_u = u'my ünicôdé strįng...
not None test in Python [duplicate]
...rams
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Which $_SERVER variables are safe?
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