大约有 5,476 项符合查询结果（耗时：0.0709秒） [XML]
How do I monitor the computer's CPU, memory, and disk usage in Java?
...g percent;
if (nanoAfter > nanoBefore)
percent = ((cpuAfter-cpuBefore)*100L)/
(nanoAfter-nanoBefore);
else percent = 0;
System.out.println("Cpu usage: "+percent+"%");
Note: You must import com.sun.management.OperatingSystemMXBean and not java.lang.management.OperatingSystemMXBean.
...
Regex to replace multiple spaces with a single space
...tr.replace( / +(?= )/g, ' ') -> 3250ms
This is on Firefox, running 100k string replacements.
I encourage you to do your own profiling tests with firebug, if you think performance is an issue. Humans are notoriously bad at predicting where the bottlenecks in their programs lie.
(Also, note...
jQuery ajax error function
...
100
Try this:
error: function(jqXHR, textStatus, errorThrown) {
console.log(textStatus, errorTh...
What MySQL data type should be used for Latitude/Longitude with 8 decimal places?
...Of course some calculations expand error. If I have a DECMIAL x then sin(x^100) is going to be way off. But if (using DECIMAL (10, 8) or FLOAT (10, 8)) I calculate 0.3 / 3 then DECIMAL gives 0.100000000000 (correct), and float gives 0.100000003974 (correct to 8dp, but would be wrong if multiplied). ...
$.focus() not working
...s on an element which is not yet visible` - I love you. By simply adding a 100ms timeout I could trigger the focus on my hidden search box. Thanks!
– LuBre
Jan 30 at 17:28
...
What is the tilde (~) in the enum definition?
...ng a bit flag for the payment method: 000 = None; 001 = Cash; 010 = Check; 100 = Credit Card; 111 = All
– Dillie-O
Dec 22 '08 at 21:44
...
Easiest way to split a string on newlines in .NET?
...em when you start to scale -- run a 32-bit batch-processing app processing 100MB documents, and you'll crap out at eight concurrent threads. Not that I've been there before...
Instead, use an iterator like this;
public static IEnumerable<string> SplitToLines(this string input)
{
...
Scroll Element into View with Selenium
...ntoView(true);" + "window.scrollBy(0,-100);", e); for IE and Firefox and js.ExecuteScript("arguments[0].scrollIntoViewIfNeeded(true);", e); for Chrome. Simple.
– IamBatman
Oct 9 '17 at 15:46
...
How to make a background 20% transparent on Android
...age, for example 20%, you know the opaque percentage value is 80% (this is 100-20=80)
The range for the alpha channel is 8 bits (2^8=256), meaning the range goes from 0 to 255.
Project the opaque percentage into the alpha range, that is, multiply the range (255) by the percentage. In this example 25...
Custom Drawable for ProgressBar/ProgressDialog
...rStyleHorizontal"
android:indeterminateOnly="false"
android:max="100">
</ProgressBar>
Enjoy!
share
|
improve this answer
|
follow
|
...