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Fast way of counting non-zero bits in positive integer
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I tried adapting Óscar's and Adam's solutions to process the integer in 64-bit and 32-bit chunks, respectively. Both were at least ten times slower than bin(n).count("1") (the 32-bit version took about half again as much time).
On the other hand, gmpy popcount() took about 1/20th of the time of ...
How many threads can a Java VM support?
...h spawns 25,000 threads and all those threads write some data in MySql database at regular interval of 2 seconds.
I ran this program with 10,000 threads for 30 minutes continuously then also my system was stable and I was able to do other normal operations like browsing, opening, closing other pro...
Why would I ever use push_back instead of emplace_back?
...d construct it directly in place with no copies or moves. This may be true based on the code as written in standard libraries, but it makes the mistaken assumption that the optimizing compiler's job is to generate the code you wrote. The optimizing compiler's job is actually to generate the code you...
How do I install cURL on cygwin?
... this file.so i downloaded this file (or you can do a wget).I am on windows64 bit.So ,if you go to https://cygwin.com/install.html ,you can download setup-x86_64.exe file from the install and updates section,move this setup-x86_64.exe to your c:/cygwin64,and then run it from there ( setup-x86_64.e...
What is an application binary interface (ABI)?
...ses 32-bit integers to indicate the offset of a function and you switch to 64-bit integers, then already-compiled code that uses that library will not be accessing that field (or any following it) correctly. Accessing data structure members gets converted into memory addresses and offsets during co...
Advances social tools app with cool UI - Koded Apps - Kodular Community
...loader-image");
if (splashImage) {
splashImage.src = "data:image/svg+xml;base64,".concat(encodedSvg);
const connectStart = performance.timing.connectStart || 0;
const targetTime = connectStart + DELAY_TARGET;
let splashInterval;
let discourseReady;
const swapSplash = () => {
splashWr...
What is Cache-Control: private?
...st has to be a something.
If I'm pulling a list of products out of a database, the server can send the last rowversion as an ETag, rather than a date:
200 OK
ETag: "247986"
My ETag can be the SHA1 hash of a static resource (e.g. image, js, css, font), or of the cached rendered page (i.e. this i...
Is there a link to GitHub for downloading a file in the latest release of a repository?
...un-monitor/bosun/releases/download/[0-9]*/scollector-linux-armv6' | wget --base=http://github.com/ -i - -O scollector
Explanation:
curl -s -L is to silently download the latest release HTML (after following redirect)
egrep -o '...' uses regex to find the file you want
wget --base=http://github....
How do I properly clean up Excel interop objects?
...ots" is not sufficient to prevent a problem: stackoverflow.com/questions/4964663/…
– Mike Rosenblum
Feb 13 '11 at 17:22
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Is there any good dynamic SQL builder library in Java? [closed]
...n the concept of code generation, where meta classes are generated for database tables and fields. This facilitates a nice, clean DSL but it faces a problem when trying to create queries for databases that are only known at runtime, like in the OP's example above. While jOOQ supports a String based ...