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In C# what is the difference between a destructor and a Finalize method in a class?
...ize method. Reference:
http://msdn2.microsoft.com/en-us/library/aa720161(VS.71).aspx
Finalize
A Finalize method acts as a safeguard to clean up resources in the
event that your Dispose method is not called. You should only
implement a Finalize method to clean up unmanaged resources. You...
How does BLAS get such extreme performance?
...face.
Firstly I will mention things that are largely unrelated:
Fortran vs C, makes no difference
Advanced matrix algorithms such as Strassen, implementations dont use them as they dont help in practice
Most implementations break each operation into small-dimension matrix or vector operations i...
Shell equality operators (=, ==, -eq)
...true or 0. So many are bitten by this bug:
$ [[ 10 < 2 ]]; echo $?
0
vs the correct test for 10 being arithmetically less than 2:
$ [[ 10 -lt 2 ]]; echo $?
1
In comments, there is a question of the technical reason using the integer -eq on strings returns True for strings that are not the...
Performance surprise with “as” and nullable types
... syntax is indeed 1 byte smaller, it mostly wins big by making zero calls (vs. two) and avoiding the unbox operation altogether when possible.
// static void test1(Object o, ref int y)
// {
// int? x = o as int?;
// if (x.HasValue)
// y = x.Value;
// }
[0] valuetype [mscorlib]Nulla...
When do you use POST and when do you use GET?
... edited Jun 6 '18 at 20:33
vs97
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answered Sep 5 '08 at 19:12
...
ReadOnlyCollection or IEnumerable for exposing member collections?
...
@VojislavStojkovic you can't use bar.Foos[17] with IReadOnlyCollection. The only difference is additional Count property. public interface IReadOnlyCollection<out T> : IEnumerable<T>, IEnumerable
– ...
What Content-Type value should I send for my XML sitemap?
... response is, and conclude (as with What's the difference between text/xml vs application/xml for webservice response) that both text/xml and application/xml are permissible. However, none address whether there are any rules specific to sitemaps.
Answer: there aren't. The sitemap spec is https://ww...
Getting an element from a Set
...ements of a Set is more work than getting a single value from a Map. (O(N) vs O(1))
– Jamie Flournoy
Oct 5 '18 at 21:16
...
Control the dashed border stroke length and distance between strokes
...
@WilliamHampshire I would go with this technique youtu.be/vs34f9FiHps?t=779 but check accepted answer, you might like other solutions better
– godblessstrawberry
Sep 21 '18 at 12:55
...
Difference between len() and .__len__()?
...e different paths depending on the objects involved) -- in the case of len vs __len__, it's just a bit of sanity checking on the built-in that is missing from the magic method:
>>> class bah(object):
... def __len__(self): return "an inch"
...
>>> bah().__len__()
'an inch'
>...