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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...
...SQLite.aix
中文网测试案例
.aia 测试源码下载：
TestSqlite.aia
打开数据库
一般可以在屏幕初始化时打开db。如果数据库已打开，则不会发生任何事情（即可以多次调用打开操作）。
...
Ordering by the order of values in a SQL IN() clause
...
See following how to get sorted data.
SELECT ...
FROM ...
WHERE zip IN (91709,92886,92807,...,91356)
AND user.status=1
ORDER
BY provider.package_id DESC
, FIELD(zip,91709,92886,92807,...,91356)
LIMIT 10
...
ros 基本调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的运行了。通常系统会出现蓝屏，但如果内核调试器处在激活状态，系统会提示你如何去得知系统现在的状态。默认情况下，ros的debug编译版本会开启内置的内核调试器——KDBG（http://www.reactos.org/wiki/Kdbg），而release版本不会有这...
Any good, visual HTML5 Editor or IDE? [closed]
...va EE Developers" Latest Stable Version Download Google Plugin for Eclipse.zip Select your download according to your Eclipse Version After Downloading (don't Unzip) Open Eclipse Help > Install New Software > Add > Archive > Select the Downloaded Plug-in.zip
in the field "Name" enter "Go...
Convert base-2 binary number string to int
... 2 * 1)
add = lambda x,y : x + y
reduce(add, [int(x) * 2 ** y for x, y in zip(list(binstr), range(len(binstr) - 1, -1, -1))])
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Running Selenium WebDriver python bindings in chrome
...tall chromium-browser
get appropriate version of chrome driver from here
Unzip the chromedriver.zip
Move the file to /usr/bin directory sudo mv chromedriver /usr/bin
Goto /usr/bin directory cd /usr/bin
Now, you would need to run something like sudo chmod a+x chromedriver to mark it executable.
final...
Rename a dictionary key
...ild an entirely new one using a comprehension.
>>> OrderedDict(zip('123', 'abc'))
OrderedDict([('1', 'a'), ('2', 'b'), ('3', 'c')])
>>> oldkey, newkey = '2', 'potato'
>>> OrderedDict((newkey if k == oldkey else k, v) for k, v in _.viewitems())
OrderedDict([('1', 'a'), (...
Windows API Code Pack: Where is it? [closed]
...
A zip file containing the same files as the original executable self-extractor (i.e. the source, binaries and docs) is located here: https://github.com/jamie-pate/KeepSync/blob/master/contrib/Windows%20API%20Code%20Pack%201.1.z...
MQTT物联网协议完全实践指南 · App Inventor 2 中文网
...ient1.ClientKeyFile to "client.key"
call connectToBroker
// 动态密码更新
when Button_UpdateCredentials.Click
do
set NewUsername to TextBox_Username.Text
set NewPassword to TextBox_Password.Text
if NewUsername = "" or NewPassword = "" then
show notification "用户名...
Postgresql GROUP_CONCAT equivalent?
...he array type:
select
array_to_string(
array(select distinct unnest(zip_codes) from table),
', '
);
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