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How does BLAS get such extreme performance?
... @ulaff.net: That maybe. This was written 6 years ago. I think the fastest BLAS implementation currently (on Intel of course) is Intel MKL, but it isn't open source.
– Andrew Tomazos
Feb 11 '19 at 14:34
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Make git automatically remove trailing whitespace before committing
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Also, I tweaked my version of fixws to fail fast if you're already in an interactive rebase since otherwise it will die at the git rebase --whitespace=fix line and leave you in a weird state. I borrowed from this question and just added an extra case before the if: f...
How to backup a local Git repository?
...e repository).
This will push all refs (branches and tags) including non-fast-forward updates. I use this for creating backups of my local repository.
The man page describes it like this:
Instead of naming each ref to push, specifies that all refs under $GIT_DIR/refs/ (which includes but i...
How to check if PHP array is associative or sequential?
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@Thought Your code work very fast but it cannot detect sequential array. Example array(1 => 'a', 0 => 'b', 2 => 'c') will become false (sequential array) while it should be true (associative array). toolsqa.com/data-structures/array-in-programmi...
In C#, why is String a reference type that behaves like a value type?
...way, so is not a useful short-cut. Checking for ReferenceEquals(x, y) is a fast test and you can return 0 immediately, and when mixed in with your null-test doesn't even add any more work.
– Jon Hanna
Aug 3 '12 at 11:38
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Getting an element from a Set
...d maybe hash for performance). So a good set implementation can be equally fast to Map<Foo, Foo> but use up to 50% less memory. In case of Java it won't matter, as the HashSet is internally based on HashMap anyway.
– Mecki
Mar 6 '15 at 17:38
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What is exactly the base pointer and stack pointer? To what do they point?
...efore the function call).
Doing memory allocation this way is very, very fast and efficient.
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What are good alternatives to SQL (the language)? [closed]
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I definitely spoke too fast about D. When I saw the name, I was thinking Digital Mars' D -- I see that the D data language is something else entirely.
– Ken Bloom
Mar 23 '10 at 3:45
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Data structure: insert, remove, contains, get random element, all at O(1)
...ve, and infinitely bad if infinitely improbable worst-case behaviour...
a faster compromise would be to use a list of pre-generated random offsets from the initial randomly selected bucket, %-ing them into the bucket count
Not a great solution, but may still be a better overall compromise than ...
What kind of Garbage Collection does Go use?
...program is not allocating memory (that is: shuffling pointers around is as fast as in C, although in practice this runs somewhat slower than C because the Go compiler is not as advanced as C compilers such as GCC)
supports finalizers on objects
there is no support for weak references
Go 1.0 garbag...