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App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
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最新版拓展下载：
edu.mit.appinventor.ble-20230728.aix
低功耗蓝牙，也称为蓝牙LE 或简称 BLE，是一种类似于经典蓝牙的新通信协议，不同之处在于它旨在消耗更少的功耗和成本...
MVC演化史 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...发工作，为了适应更复杂的逻辑，开发了Classic MVC的改进版，也就是Application Model MVC，在原有架构基础上引入了Application Model，如下图所示：
Application Model MVC
图解：Application Model在Model和View、Controller之间扮演着一个中继者的...
Cluster analysis in R: determine the optimal number of clusters
...lustering/hierarchical-cluster-analysis
http://gastonsanchez.wordpress.com/2012/10/03/7-ways-to-plot-dendrograms-in-r/ And see here for more exotic methods: http://cran.r-project.org/web/views/Cluster.html
Here are a few examples:
d_dist <- dist(as.matrix(d)) # find distance matrix
plot(hclu...
How to use Boost in Visual Studio 2010
...build-type=complete --libdir=C:\Boost\lib\i386 install
For Visual Studio 2012, use toolset=msvc-11.0
For Visual Studio 2010, use toolset=msvc-10.0
For Visual Studio 2017, use toolset=msvc-14.1
Add C:\Boost\include\boost-(version) to your include path.
Add C:\Boost\lib\i386 to your libs path.
Bu...
Batch script: how to check for admin rights
...N
Works on WinXP --> Win8 (including 32/64 bit versions).
EDIT: 8/28/2012 Updated to support Windows 8. @BenHooper pointed this out in his answer below. Please upvote his answer.
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使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...ly Media, Inc.”.
[3] Mackensen, E., Lai, M., & Wendt, T. M. (2012, October). Bluetooth low energy (ble) based wireless sensors. In Sensors, 2012 IEEE (pp. 14). IEEE.
[4] Gubbi, J., Buyya, R., Marusic, S., & Palaniswami, M. (2013). Internet of Things (IoT): A vision, architectural ...
Difference between __str__ and __repr__?
...time
>>> today = datetime.datetime.now()
>>> str(today)
'2012-03-14 09:21:58.130922'
>>> repr(today)
'datetime.datetime(2012, 3, 14, 9, 21, 58, 130922)'
Read this documentation for repr:
repr(object)
Return a string containing a printable representation of an ob...
In Windows Azure: What are web role, worker role and VM role?
...M Role, and update to web/worker role baseline OS images to Windows Server 2012
Good link by @Vladimir. A bit more clarification: All roles (web, worker) are essentially Windows Server. Web and Worker roles are nearly identical:
Web roles are Windows Server VMs with IIS enabled
Worker roles are W...
The Definitive C++ Book Guide and List
...essible format and in great detail. The fifth edition (released August 16, 2012) covers C++11. [Review]
* Not to be confused with C++ Primer Plus (Stephen Prata), with a significantly less favorable review.
Programming: Principles and Practice Using C++ (Bjarne Stroustrup, 2nd Edition - May 25, 201...
How do I select a merge strategy for a git rebase?
...Resolve rebase conflicts by favoring 'theirs' version
#
# Copyright (C) 2012 Rodrigo Silva (MestreLion) <linux@rodrigosilva.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Fre...