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What is more efficient? Using pow to square or just multiply it with itself?
..." ";
return x;
}
int main()
{
using std::cout;
long loops = 100000000l;
double x = 0.0;
cout << "1 ";
x += testpow<1>(rand(), loops);
x += test1(rand(), loops);
cout << "\n2 ";
x += testpow<2>(rand(), loops);
x += test2(rand(), loops...
Why / when would it be appropriate to override ToString?
...ensible output that's easy for humans to parse but YMMV.
TCP:[destination:000, source:000]
Nothing complex, the output isn't for machines to parse (ie unless people are abusing your code), the intended purpose is for human readability.
But what about all the rest of that juicy info I talked abou...
在 App Inventor 2 中使用图像 · App Inventor 2 中文网
...pp’s Media from a high-resolution image where the size of each image is 1000 pixels by 1000 pixels. Each of those images requires 1000×1000 = 1 million pixels or 1000×1000×4 = 4 Megabytes and the entire grid would require 26×4 = 104 Megabytes. Typical amounts of memory available to a running...
Best way to store time (hh:mm) in a database
...st it's internationally consistently flawed.
With time however, we have; 1000 milliseconds in a second, 60 seconds to a minute, 60 minutes to an hour, 12 hours for each half a day, approximately 30 days per month which vary by the month and even year in question, each country has its time offset fr...
How do I catch a PHP fatal (`E_ERROR`) error?
...
Pfff, I remember those 650.000+ e-mails i got the following morning. Since then my ErrorHandler is capped at 100 emails per webserver.
– Bob Fanger
Sep 23 '09 at 8:12
...
How much of a git sha is *generally* considered necessary to uniquely identify a change in a given c
...s 1 % when the repository has just about 9300 items (git commits). For 110 000 commits the probability is 75 %. But if you have hash hex string of length 12 the probability of collision in 100 000 commits is below 0.1 %.
sha...
What is the Haskell response to Node.js?
... are of course cheaper than OS threads but they are not free. Creating 100.000 of them uses approx. 350 MB of memory and take some time. Try 100.000 connections with node.js. No problem at all . It would be magic if it were not faster since ghc uses epoll under the hood so they cannot be faster than...
Bootstrap carousel multiple frames at once
...rouselExample" class="carousel slide" data-ride="carousel" data-interval="9000">
<div class="carousel-inner row w-100 mx-auto" role="listbox">
<div class="carousel-item col-md-4 active">
<img class="img-fluid mx-auto d-block" src="//placehold.it/...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...tail 12103 6578 0 /usr/bin/tail -v -n 16 /proc/net/dev
1.000 df 12104 6578 0 /usr/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/h...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...tail 12103 6578 0 /usr/bin/tail -v -n 16 /proc/net/dev
1.000 df 12104 6578 0 /usr/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/h...