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Why extend the Android Application class?
... limited? just passing the data objects instead of serializing them saves cpu and memory. parceling stuff for inside-process-on-same-device handovers is not ideal in any way. I really don't see the point of intentservice use like that(just do the other thread with new). really a lot of the stuff t...
Why does integer overflow on x86 with GCC cause an infinite loop?
...y integers wrap around, but on occasion weird stuff happens".
Yes, on x86 CPUs, integers usually wrap the way you expect. This is one of those exceptions. The compiler assumes you won't cause undefined behavior, and optimizes away the loop test. If you really want wraparound, pass -fwrapv to g++ or...
Redefining NULL
... work required to avoid dereferencing NULL (assuming that in your case the CPU isn't helping) is the same no matter how NULL is defined, so it's easier to leave NULL defined as zero, and make sure that zero can't ever be dereferenced from C.
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Hidden Features of PHP? [closed]
...in the language core and are used all over the place which results in good CPU cache locality. Perl and Python both use separate language constructs for lists and maps resulting in more copying and potentially confusing transformations.
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How to get the system uptime in Windows? [closed]
...ce tab.
The current system uptime is shown under System or Performance ⇒ CPU for Win 8/10.
2: By using the System Information Utility
The systeminfo command line utility checks and displays various system statistics such as installation date, installed hotfixes and more.
Open a Command Prompt...
Java logical operator short-circuiting
... short-circuiting.
Note that this is more than an attempt at saving a few CPU cycles: in expressions like this
if (mystring != null && mystring.indexOf('+') > 0) {
...
}
short-circuiting means a difference between correct operation and a crash (in the case where mystring is null)....
Is Python interpreted, or compiled, or both?
...
The CPU can only understand machine code indeed. For interpreted programs, the ultimate goal of an interpreter is to "interpret" the program code into machine code. However, usually a modern interpreted language does not interpre...
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
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Is there a performance gain in using single quotes vs double quotes in ruby?
...rsed to a tSTRING_CONTENT (see the source in parse.y). In other words, the CPU will go through the exact same operations when creating 'string' or "string". The exact same bits will flip the exact same way. Benchmarking this will only show differences that are not significant and due to other factor...
What's the shortest code to cause a stack overflow? [closed]
...
You.. crashed my browser and.. sent my CPU fan into overdrive.
– Sam152
May 11 '09 at 15:01
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