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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
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This probably has do with conflicts in your L2 cache.
Cache misses on matice1 are not the problem because they are accessed sequentially.
However for matice2 if a full column fits in L2 (i.e when you access matice2[0, 0], matice2[1, 0], matice2[2, 0] ... etc, nothing g...
in_array multiple values
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200
Intersect the targets with the haystack and make sure the intersection is precisely equal to t...
How to check if variable's type matches Type stored in a variable
... Animal {}
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object x = new Tiger();
bool b1 = x is Tiger; // true
bool b2 = x is Animal; // true also! Every tiger is an animal.
But checking for type identity with reflection checks for identity, not for compatibility
bool b5 = x.GetType() == typeof(Tiger); // true
bool b6 = x.GetType() == ty...
What is that “total” in the very first line after ls -l? [closed]
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answered Sep 13 '11 at 12:18
MatMat
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Python: Tuples/dictionaries as keys, select, sort
Suppose I have quantities of fruits of different colors, e.g., 24 blue bananas, 12 green apples, 0 blue strawberries and so on.
I'd like to organize them in a data structure in Python that allows for easy selection and sorting. My idea was to put them into a dictionary with tuples as keys, e.g.,
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Unlink of file failed
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204
That usually means a process is still using that specific file (still has an handle on it)
(on...
Using $_POST to get select option value from HTML
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Use this way:
$selectOption = $_POST['taskOption'];
But it is always better to give values ...
What are Bearer Tokens and token_type in OAuth 2?
...lement the Resource Owner & Password Credentials flow from the OAuth 2 spec. I'm having trouble understanding the token_type value that gets sent back with a valid response. In the spec all the examples show "token_type":"example" but says it should be
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How to get first character of a string in SQL?
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edited Dec 30 '12 at 9:40
Mahmoud Gamal
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Why does C++ rand() seem to generate only numbers of the same order of magnitude?
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There are only 3% of numbers between 1 and 230 which are NOT between 225 and 230. So, this sounds pretty normal :)
Because 225 / 230 = 2-5 = 1/32 = 0.03125 = 3.125%
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