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App Inventor 2 连接方式：AI伴侣、模拟器、USB · App Inventor 2 中文网
...，无法摇动它、无法拨打或接听电话等，也无法模拟蓝牙通信（需要测试SPP/BLE蓝牙通信的请使用安卓真机）。
Q：AI伴侣扫码测试时手机和电脑必须在同一局域网内吗？
A：旧的兼容模式的测试原理是电脑端启动Web服务供手机...
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
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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...
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
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Filling a DataSet or DataTable from a LINQ query result set
...wered Aug 15 '08 at 16:42
Lars MæhlumLars Mæhlum
5,86633 gold badges2424 silver badges3232 bronze badges
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实战Nginx与PHP（FastCGI）的安装、配置与优化 - 更多技术 - 清泛网 - 专注...
...tCGI是一个可伸缩地、高速地在HTTP server和动态脚本语言间通信的接口。多数流行的HTTP server都支持FastCGI，包括Apache、Nginx和lighttpd等，同时，FastCGI也被许多脚本语言所支持，其中就有PHP。
FastCGI是从CGI发展改进而来的。传统CGI接...
Set breakpoint in C or C++ code programmatically for gdb on Linux
... answered Dec 1 '10 at 16:22
Håvard SHåvard S
20.4k55 gold badges5555 silver badges6767 bronze badges
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App Inventor 2 SliderVertical 扩展：垂直的滑动条 · App Inventor 2 中文网
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SliderVertical 拓展
将滑块组件旋转 90º，效果如下：
代码块如下：
.aix 拓展下载：
com.SliderVertical.aix
demo下载：
TestSliderVertical.aia
切换 目录 ...