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Long list of if statements in Java
... boilerplate, but it won't get any shorter..)
3) you will save any wasted cpu cycles by going through a long list of if's or calculating hashCodes and doing lookups.
edit:
if you don't have enums but strings as source, just use Command.valueOf(mystr).exec() to call the exec method.
note that you ...
Changing one character in a string
...ing Python, and that language is a total mess. Regarding your note on fast CPUs I'm totally with you. But a part of that problem is the popular disapproval of premature optimization, which leads to slow interpreters and libraries by leaking lots of CPU cycles on the way.
– Bach...
MySQL select 10 random rows from 600K rows fast
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I am getting fast queries (around 0.5 seconds) with a slow cpu, selecting 10 random rows in a 400K registers MySQL database non-cached 2Gb size. See here my code: Fast selection of random rows in MySQL
<?php
$time= microtime_float();
$sql='SELECT COUNT(*) FROM pages';
$rquery= B...
廉价共享存储解决方案2-drbd+cman+gfs2 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...同时读写可能会有IO异常,导致drbd设备失效
为了解决这个问题则使用 gfs + cman 实现分布式文件锁方案
3.3安装cman
yum –y cman
3.4 gfs集群文件系统
在 /usr/local/drbd-utils-8.9.4/etc/drbd.conf
在配置文件的 net 选项中
all...
BLE（四）嗅探工具 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...gle稳定，经常会抓不到后面数据通信的网络包，不过这一问题应该是可以通过优化算法得到解决的，但需要对官方的固件进行逆向或自己根据Nordic公司提供的BLE协议栈重写代码。。
优点：
价格便宜，USB Dongle淘宝价70...
What is the best way to test for an empty string in Go?
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There was a time when I counted CPU cycles and reviewed the assembler that the C compiler produced and deeply understood the structure of C and Pascal strings... even with all the optimizations in the world len() requires just that little extra bit of work....
Completely uninstall PostgreSQL 9.0.4 from Mac OSX Lion?
...etting ./uninstall-postgresql.app/Contents/MacOS/uninstall-postgresql: Bad CPU type in executable... I completely forgot EDB apps are all 32-bit.
– msr_overflow
Dec 6 '19 at 21:23
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Difference between StringBuilder and StringBuffer
...ng and unlocking code for synchronization which will unnecessarily take up CPU time. Don't use locks unless it is required.
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Volatile boolean vs AtomicBoolean
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Aren't CPU caches the main factor for setting volatile? To ensure that the value read is actually what it was set to most recently
– jocull
Mar 11 '19 at 14:52
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【软著】软件著作权证书申请流程及注意事项，模板分享 - App Inventor 2 中...
...明专利来说，简单很多。只要你提供的材料及文档格式没问题，那就大概率能过。必须按照模板来写，参考模板见附件（源码模板带行号，自动就是每页50行），再配合下文的注意事项。
4、是否收费？一般来说，找第三方的...