大约有 15,000 项符合查询结果（耗时：0.0409秒） [XML]
What is the relative performance difference of if/else versus switch statement in Java?
...re could be some performance gains, if the code is part of the performance CPU graph.
share
|
improve this answer
|
follow
|
...
Parsing JSON with Unix tools
...f a parser that has to support recursion, and in this case, spends lots of CPU building trees for structures you don't care about. (If someone wrote a finite state transducer that did proper (depth-limited) JSON parsing, that would be fantastic! In the meantime we have "grep -o".)
To write maint...
UIView Infinite 360 degree rotation animation?
...n the animation at each PI/2 angle (90 degrees) and a marginal increase in CPU usage over the chosen answer using CABasicAnimation. The CABasicAnimation method produces a flawlessly smooth animation.
– Arjun Mehta
Feb 28 '14 at 18:59
...
Round to at most 2 decimal places (only if necessary)
...JavaScript doesn't have home made floating point numbers; it relies on the CPU/FPU for that. A computer uses binary, and in binary, there isn't any numbers like 0.1, but a mere binary approximation for that. Why? For the same reason than 1/3 cannot be written in decimal: its value is 0.33333333... w...
关于php的socket初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...程来处理的 IO 模型，但是效率相对比较差，也很容易出问题，所以暂时不做介绍了）。在这些多路复用的模式中，异步阻塞/非阻塞模式的扩展性和性能最好。
引入阻塞/非阻塞,、同步/异步比喻很形象的一段话：
有A，B，C，D...
Current time in microseconds in java
...t re-synchronize every now and then. The system time (currentTime) and the CPU clock (nanoTime) are NOT in sync, since they are often based on different hardware clocks. Additionally, the time server of your operating system re-synchronizes the system clock with an external time source, if available...
Memcache(d) vs. Varnish for speeding up 3 tier web architecture
... from doing a lot of read work, Varnish saves your dynamic web server from CPU load by making you generate pages less frequently (and lightens the db load a bit as well if not for Memcache).
share
|
...
How to make an OpenGL rendering context with transparent background?
...ng the
OpenGL extensions string. Don't be fooled by sub-strings,
etc. */
for ( start = extList; ; ) {
where = strstr( start, extension );
if ( !where )
break;
terminator = where + strlen( extension );
if ( where == start || *(where - 1) == ' ' )
if ( *termi...
C#: List All Classes in Assembly
...an't do anything because it is drilling away at trying to get them all. My CPU shoots to 30% on one of my 4 cores. I mean really I am just wondering if there is a way to say, "Hey - only look in THIS namespace" - I am under the impression that it's not possible because the GetTypes() method only has...
What's the best way to check if a String represents an integer in Java?
...rtinCarney I modified it and benchmarked pattern compilation. Obviously my CPU/JIT is faster, but if I interpolate it back, the compilation time is 336.
– tedder42
Oct 8 '14 at 23:26
...