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Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
...d1 && cmd2
[ a = a -a b = b ]: equivalent, but deprecated by POSIX³
[ a = a ] && [ b = b ]: POSIX and reliable equivalent
(
[[ (a = a || a = b) && a = b ]]: false
[ ( a = a ) ]: syntax error, () is interpreted as a subshell
[ \( a = a -o a = b \) -a a = b ]: equivalent, ...
Coding in Other (Spoken) Languages
...h names, there's a similar dilemma about whether to use special chars (äöå) or replace them with a & o (and if you do use them, you're likely running into charset problems). But yeah, fortunately I haven't had to use Finnish in code for at least 7 years. :)
– Jonik
...
Extract subset of key-value pairs from Python dictionary object?
...works in 2.7 too):
{k: bigdict[k] for k in ('l', 'm', 'n')}
Update: As Håvard S points out, I'm assuming that you know the keys are going to be in the dictionary - see his answer if you aren't able to make that assumption. Alternatively, as timbo points out in the comments, if you want a key tha...
Does PostgreSQL support “accent insensitive” collations?
... unaccent() always substitutes a single letter:
SELECT unaccent('Œ Æ œ æ ß');
unaccent
----------
E A e a S
You will love this update to unaccent in Postgres 9.6:
Extend contrib/unaccent's standard unaccent.rules file to handle all
diacritics known to Unicode, and expand ligatures cor...
水果vs蔬菜智能分类器 - EdgeML图像识别项目 · App Inventor 2 中文网
...管理
7. 高级清除和重置功能
8. 性能监控和统计功能
第五步：测试和部署
1. 连接测试设备
2. 功能测试
应用场景 ...
机器视觉成争夺焦点 应用场景将加速拓展 - 资讯 - 清泛网 - 专注C/C++及内核技术
...觉已成功应用到工业机器人、自动驾驶、医疗诊断、安防监控和工业检测等多个领域。
机器视觉是指采用机器代替人眼来做测量与判断，通过计算机摄取图像来模拟人的视觉功能，实现人眼视觉的延伸。更为重要的是，机器视...
XenApp & XenDesktop - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的。XenApp可集成必要的工具和基础架构，来控制、测量和监控性能，确保可达到服务水平协议和公司安全要求。应用虚拟化技术、会话虚拟化技术和集中应用管理使用户可使用Web浏览器，通过Citrix Receiver来从任何设备上直接访问...
Linux 网卡速率（百兆/千兆）的查看及调整 - 操作系统(内核) - 清泛网 - 专...
...要在局域网中的通信流量较大，机器是千兆网卡。但通过监控查看实际网速只到了100Mbps，通过查看网 最近遇到一个奇怪的问题，程序运行过程中网卡打满，导致服务通信全部超时，程序需要在局域网中的通信流量较大，机器...
Compression/Decompression string with C#
...ut only for UTF8-based things. If you add in, say, Swedish characters like åäö to the string value you're serialize/deserializing it will fail a round-trip test :/
– bc3tech
Aug 21 '19 at 12:32
...
micro:bit 微控制器教程 · App Inventor 2 中文网
...用场景
1. 机器人控制
2. 传感器数据监控
3. 双向通信
常见问题
Q: 扫描不到 micro:bit 设备？
Q: 连接失败？
Q: 无法接收温度数据？
Q: 控制指令无效...