大约有 15,000 项符合查询结果（耗时：0.0503秒） [XML]
Most efficient way of making an if-elif-elif-else statement when the else is done the most?
...e(1000000):
the_thing = options[something]
...and note the amount of CPU time they use...
1.py: 160ms
2.py: 170ms
3.py: 110ms
4.py: 100ms
...using the user time from time(1).
Option #4 does have the additional memory overhead of adding a new item for every distinct key miss, so if you're e...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...浮点数会慢（除非大于100,000,000,000,000），或是会有精度问题。你可以以如下的方式表示数字，0x开头的16进制和C是很像的。num = 1024
num = 3.0
num = 3.1416
num = 314.16e-2
num = 0.31416E1
num = 0xff
num = 0x56复制代码
字符串你可以用单引号，也...
How to refresh app upon shaking the device?
...er should be deactivated onPause and activated onResume to save resources (CPU, Battery).
The code assumes we are on planet Earth ;-) and initializes the acceleration to earth gravity. Otherwise you would get a strong "shake" when the application starts and "hits" the ground from free-fall. However,...
When to use Tornado, when to use Twisted / Cyclone / GEvent / other [closed]
... the word "concurrency" to mean "concurrent parallel execution on multiple CPUs". Twisted can do concurrent I/O scheduling via asynchronous (callback-based) I/O. GEvent can do concurrent I/O scheduling via a micro-thread scheduler. In Twisted, using spawnProcess, this I/O scheduling can be transla...
How to read keyboard-input?
... Sleep for a short time to prevent this thread from sucking up all of your CPU resources on your PC.
time.sleep(0.01)
print("End.")
# If you run this Python file directly (ex: via `python3 this_filename.py`), do the following:
if (__name__ == '__main__'):
main()
Sample output:
...
Is there any way to put malicious code into a regular expression?
... states at the same time, and backtracking can eat your lunch — and your CPU.
Denial‐of‐Service Solutions
Probably the most reasonable way to address these patterns that are on the losing end of a race with the heat‐death of the universe is to wrap them with a timer that effectively places...
Best practices for exception management in Java or C# [closed]
... of code to get by without it would "resolve" it), or whether it means the CPU is on fire and the system should do a "safety shutdown" at first opportunity. It sounds like Mr. Hejlsberg is suggesting that code should assume the former; perhaps that's the best possible strategy given the existing ex...
Resizing an image in an HTML5 canvas
.../**
* Hermite resize - fast image resize/resample using Hermite filter. 1 cpu version!
*
* @param {HtmlElement} canvas
* @param {int} width
* @param {int} height
* @param {boolean} resize_canvas if true, canvas will be resized. Optional.
*/
function resample_single(canvas, width, height, res...
Why does direction of index matter in MongoDB?
...up a level and down the next branch. It's O(n) Out of order it's much more CPU intensive.
– Jared Kells
Apr 26 '12 at 11:53
...
How can I profile Python code line-by-line?
....com/emeryberger/scalene -- it simultaneously does line-level profiling of CPU time and memory (and more!).
– EmeryBerger
Aug 16 at 13:54
...