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What are the effects of exceptions on performance in Java?
... simplest way is using setjmp and longjmp. That means all registers of the CPU are written to the stack (which already takes some time) and possibly some other data needs to be created... all this already happens in the try statement. The throw statement needs to unwind the stack and restore the val...
Stopwatch vs. using System.DateTime.Now for timing events [duplicate]
... a lot of activity going on under the hood of the OS, which can steal some CPU time and slow down the execution of your code. That’s why it is best to execute the tests multiple times and then remove the lowest and the highest times. For that puprose it is a good solution to have a method that exe...
Printing Java Collections Nicely (toString Doesn't Return Pretty Output)
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stack.toArray() might be very expensive, cpu, time and memory wise. a Solution that iterates over the original collection/iterable would probably be less resource consuming.
– AlikElzin-kilaka
Feb 14 '19 at 10:24
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What exactly is a Context in Java? [duplicate]
... boils down that it manages and controls inner parts of the entire device (CPU/HDD/RAM/GPU/etc) without that the enduser has to worry about. In case of Android, as per the linked Javadoc "It allows access to application-specific resources and classes, as well as up-calls for application-level operat...
How to create a sub array from another array in Java?
... something like REP STOSW by the JIT (in which case the loop is inside the CPU).
int[] src = new int[] {1, 2, 3, 4, 5};
int[] dst = new int[3];
System.arraycopy(src, 1, dst, 0, 3); // Copies 2, 3, 4 into dst
share
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When is assembly faster than C?
... uint64_t for 32x32 => 64-bit multiplies fails to optimize on a 64-bit CPU, so you need intrinsics or __int128 for efficient code on 64-bit systems.
_umul128 on Windows 32 bits: MSVC doesn't always do a good job when multiplying 32-bit integers cast to 64, so intrinsics helped a lot.
C does...
How do I check which version of NumPy I'm using?
...t 13 2017, 12:02:49)
[GCC 7.2.0]
Platform: linux-x86_64
AMD/Intel CPU? True
VML available? False
Number of threads used by default: 8 (out of 48 detected cores)
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How exactly does the callstack work?
...of programming languages work and especially how they interact with the OS/CPU. I've probably read every answer in every stack/heap related thread here on Stack Overflow, and they are all brilliant. But there is still one thing that I didn't fully understand yet.
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AVD Manager - Cannot Create Android Virtual Device
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You either haven't selected a CPU/ABI target in the dropdown below the target, or you haven't installed a system image. Open your SDK manager and ensure that you've installed ARM EABI v7a System Image under the Android 4.2 section.
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How does Java handle integer underflows and overflows and how would you check for it?
...r absolute value than the computer can actually represent in memory on its CPU. So underflow does not apply to Java Integers. @BalusC
– Jingguo Yao
Oct 14 '18 at 15:10
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