大约有 982 项符合查询结果（耗时：0.0368秒） [XML]
Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
... 53 to 6 ms (almost 10 x improvement) while the char loop improved (3.7 to 1.5) - useful, but only by a factor of two.
If you're that concerned about performance then you need to choose the right tool for the job. ostringstream is useful and flexible, but there's a penalty for using it the way you'...
Is there a unique Android device ID?
...
I wrote this 1.5+ years ago. I am not sure why it is not unique for you. You can try the advertising ID. If not, you can come up with your own solution.
– Jared Burrows
Mar 17 '15 at 17:35
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Difference between volatile and synchronized in Java
... a volatile variables is that they both provide Happens-Before edges (Java 1.5 and later). Entering a synchronized block, taking out a lock and reading from a volatile are all considered as an "acquire" and the release of a lock, exiting a synchronized block and writing a volatile are all forms of ...
Should I use px or rem value units in my CSS? [closed]
... there would be no math" – there's dealing with having to calculate what 1.5em actually works out to.)
One other potential problem of using only relative units for font sizes is that user-resized fonts may break assumptions your layout makes. For example, this might lead to text getting clipped ...
jQuery Mobile: document ready vs. page events
... is now deprecated and it will stay active until (including) jQuery Mobile 1.5, so you can still use everything mentioned below, at least until next year and jQuery Mobile 1.6.
Old events, including pageinit don't exist any more, they are replaced with pagecontainer widget. Pageinit is erased compl...
Prototypical inheritance - writing up [duplicate]
...etty=new RussionMini("Betty");
console.log(betty.run());//=I am running at 1.5km an hour.
The disadvantage is that you hard code Hamster.prototype. There may be patterns that will give you the advantage of super as in Java.
Most of the patterns I've seen will either break when inheritance level ...
Fastest way to determine if an integer's square root is an integer
...sqrt( float number )
{
long i;
float x2, y;
const float threehalfs = 1.5F;
x2 = number * 0.5F;
y = number;
i = * ( long * ) &y; // evil floating point bit level hacking
i = 0x5f3759df - ( i >> 1 ); // wtf?
y = * ( float * ) &i;
y = y * ( threehalfs - ( x2 * y *...
What kinds of patterns could I enforce on the code to make it easier to translate to another program
... And it is still very hard to build a good translator; it takes us about 1.5-2 man-years and we know how to use our tools. The difference is that with this much machinery, we succeed considerably more often than we fail.
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Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
.... I ran a simulation and while the compressed data is more than 1MB (about 1.5MB), it still uses over 100MB of RAM to compress the data. So even the compressed integers don't fit the problem not to mention run time RAM usage. Awarding you the bounty is my biggest error on stackoverflow.
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C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ p
... @ZunTzu: on most video players you can set the speed to 1.25, 1.5 or even 2 times the original.
– Christian Severin
Dec 15 '15 at 17:48
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