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App Inventor 2 MQTT拓展入门（保姆级教程） · App Inventor 2 中文网
...阅设备的数量，以及消息的发送历史：
.aia 源码下载
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《App Inventor 2 UrsPahoMqttClient 拓展中文文档（完整版）》
准备工作
APPINVENTOR测试平台：AppInventor2中文网（https://www.fun123.cn）
MQTT拓展下载...
Boost程序库完全开发指南——深入C++“准”标准库高清PDF版 - 文档下载 - ...
Boost程序库完全开发指南——深入C++“准”标准库高清PDF版C++ Boost 标准库Boost是一个功能强大、构造精巧、跨平台、开源并且完全免费的C++程序库，有着C++‘准’标准库的美誉。它由C++标准委员会部分成员...Boost是一个功能...
Get the latest record from mongodb collection
...wl." }
{ "_id" : ObjectId("5bfb6011dea65504b456ab13"), "Type" : "World Cup 2018", "Head" : "Brazil Qualified for Round of 16", "Body" : "The Brazilians are happy today, due to the qualification of the Brazilian Team for the Round of 16 for the World Cup 2018." }
{ "_id" : ObjectId("5bfb60b1dea65504b...
Peak signal detection in realtime timeseries data
... Pain, 160(2), 463.
Cloud, B., Tarien, B., Crawford, R., & Moore, J. (2018). Adaptive smartphone-based sensor fusion for estimating competitive rowing kinematic metrics. engrXiv Preprints.
Zajdel, T. J. (2018). Electronic Interfaces for Bacteria-Based Biosensing. Doctoral dissertation, UC Berk...
Set a cookie to never expire
...
Beware that when 2018 comes around, if we're not using 64-bit PHP, that this will wrap around the 32-bit integer and get sent to the client as a time near zero. (This is happening right now for 25-year cookies on PHP.)
–...
Convert Django Model object to dict with all of the fields intact
....base.ModelState at 0x7ff0993f6908>,
'auto_now_add': datetime.datetime(2018, 12, 20, 21, 34, 29, 494827, tzinfo=<UTC>),
'foreign_key_id': 2,
'id': 1,
'normal_value': 1,
'readonly_value': 2}
This is by far the simplest, but is missing many_to_many, foreign_key is misnamed, and it has ...
Objective-C 2.0 Mac和iOS开发实践指南 PDF扫描版 - 文档下载 - 清泛网 - ...
Objective-C 2.0 Mac和iOS开发实践指南 PDF扫描版Objective-C Mac iOS《Objective-C 2.0 Mac和iOS开发实践指南》专门为那些想要学习Objecti Ve-C以便为Mac OS x或iOS编写程序的程序员量身打造。《Objectiv...截图：
《Objective-C 2.0 Mac和iOS开发实践指南...
How to get the number of days of difference between two dates on mysql?
...ntity_id start_date end_date days
1 1236 2018-01-16 00:00:00 2018-08-31 00:00:00 227
2 2876 2015-06-26 00:00:00 2019-06-30 00:00:00 1465
3 3880 1990-06-05 00:00:00 2018-07-04 00:00:00 10256
4 3882 1993-07-05 00:00:00 2018-...
Format date in a specific timezone
...me and timezone according to the timezone passed in.
Example:
moment.tz('2018-07-17 19:00:00', 'YYYY-MM-DD HH:mm:ss', 'UTC').format() // "2018-07-17T19:00:00Z"
moment('2018-07-17 19:00:00', 'YYYY-MM-DD HH:mm:ss').tz('UTC').format() // "2018-07-18T00:00:00Z"
My timezone is +5 from utc. So in the...
Count the number of commits on a Git branch
... rev-list master tag-v20 --count --first-parent
Count commits done since 2018 year
git rev-list HEAD --count --first-parent --since=2018-01-01
01-01-2018, 01.01.2018, 2018.01.01 also works.
git rev-label
I wrote a script to get version-revision from Git in format like '$refname-c$count-g$short$_...