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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)....
How to check for changes on remote (origin) Git repository?
... and "git show-branch *master" were useful to me.
– Léa Massiot
May 16 '17 at 17:31
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Visual studio long compilation when replacing int with double
...ibrary routines to do the translation, while integer math can just use the CPU instructions. At the time the IEEE defined the standard, they made some choices that were very uncommon in implementation, and especially that long ago much more expensive to implement in microcode, and of course the curr...
How do I make $.serialize() take into account those disabled :input elements?
...bmit button is still clickable when read-only.
– André Chalella
Nov 7 '15 at 0:46
4
disabled pre...
C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
...这样的原子操作也会成为性能瓶颈，毕竟原子加对应的 CPU 指令 lock add 也可以看成是微型锁。
Linux 内核中提供了 RCU 方法，笔者目前对此还没有太多的了解。本文主要介绍 Hazard Pointer，一种无锁编程中广泛使用的安全内存回收...
How to write a UTF-8 file with Java?
...ns-io-1.3.1.jar) instead of FileUtils.write(...).
– Léa Massiot
Jul 19 '14 at 21:31
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Why is my program slow when looping over exactly 8192 elements?
...e div per pixel. Each loop using less local var than there are register in CPU. The other require 7 increments, 6 decrements, 1 div and between 10 to 20 mul for addressing depending on compiler optimization. Also each instruction in the loop require the result of the previous instruction, this disca...
Generating file to download with Django
...o. I just removed the FileWrapper, and it worked.
– Sébastien Deprez
May 5 '15 at 15:57
This answer doesn't work with...
Find (and kill) process locking port 3000 on Mac
...illport 8080 and it saves me some seconds
– Alfonso Pérez
Nov 11 '15 at 13:51
4
Another tip: Mak...
How to set dialog to show in full screen? [closed]
I have a GridView and i want to make an implémentation of a dialog, on which
the picture that i have selected should display in full screen.
...