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App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
来源：http://www.zsqz.com/chuangke/10r.htm
【学习目标】
1.掌握App Inventor中对调用手机计步器、位置传感器等硬件传感器的应用；
2.了解数据持久化，掌握数据存储等功能的实现；
3.通过编程实践，感受和体验利用手机...
Is there a good reason to use upper case for SQL keywords? [closed]
...ited Oct 17 '14 at 16:09
hichris123
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answered Nov 16 '08 at 8:22
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How do I use itertools.groupby()?
... edited Jul 29 at 20:57
Seanny123
5,70277 gold badges4949 silver badges100100 bronze badges
answered Aug 10 '08 at 18:45
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How do you use “git --bare init” repository?
... them to git and create the first commit.
> cd /path/to/work
> echo 123 > afile.txt
> git add .
> git config --local user.name adelphus
> git config --local user.email adelphus@example.com
> git commit -m "added afile"
[master (root-commit) 614ab02] added afile
1 file changed,...
App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎 ...
...但TaifunSQLite是收费的，美刀。
.aix 拓展下载：
cn.fun123.SQLite.aix
SQLite
SQLite 是 Android 内置的小型、快速、独立的 SQL（结构化查询语言）数据库引擎。
SQL 语句用于创建、选择、更新和删除一个或多个表中的...
Get __name__ of calling function's module in Python
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123
Check out the inspect module:
inspect.stack() will return the stack information.
Inside a fu...
What does flushing the buffer mean?
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123
Consider writing to a file. This is an expensive operation. If in your code you write one byte...
Send POST Request with Data Specified in File via Curl
...tal.xlsx' 'http://example.com/upload.aspx?user=example&password=example123&type=XLSX'
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__proto__ VS. prototype in JavaScript
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123
Prototype property is created when a function is declared.
For instance:
function Person(d...
Associative arrays in Shell scripts
...r.sh brian 10 5
real 0m0.226s
user 0m0.057s
sys 0m0.123s
$ time ./driver.sh jerry 10 5
real 0m0.706s
user 0m0.228s
sys 0m0.530s
$ time ./driver.sh irfan 100 5
real 0m10.633s
user 0m4.366s
sys 0m7.127s
$ time ./driver...