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组件速查 · App Inventor 2 中文网
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全部连接与测试用户界面多媒体传感器通信数据存储代码技巧
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不用从头学。找到当前要完成的动作，按图操作即可；每张步骤图都能点开放大。
连接与...
App Inventor 2 使用MongoDB作为后端数据库 · App Inventor 2 中文网
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附上php后端源码
Node.js 与 Python 后端
Node.js 对应实现
Python 对应实现
本文 PHP 后端已配套 Node.js 与 Python 版本，见页面中的对应实现；全部后端源码与运行说明。
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What is a correct mime type for docx, pptx etc?
...wf": "application/x-shockwave-flash", "fxp": "application/vnd.adobe.fxp", "pdf": "application/pdf", "ppd": "application/vnd.cups-ppd", "dir": "application/x-director", "xdp": "application/vnd.adobe.xdp+xml", "xfdf": "application/vnd.adobe.xfdf", "aac": "audio/x-aac", "ahead": "application/vnd.ahead....
MFC 中CImageList的用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...Windows 95及以后版本才能实现。该控件是不可见的，通常与其他如CListBox、CComboBox、CComboBoxEx以及CTabCtrl一起使用，为他们提供图标资源。
一、图像控件的对象结构
1 图像控件的数据成员
m_hImageList连接图像对象的控件句柄...
Arduino 101 实验01 - 让板载 LED 闪起来 · App Inventor 2 中文网
... 第 2 步：用计时器交替开关
第 3 步：停止与收尾
第 4 步：闪得更快一点（可选）
四、排错表
五、下一步
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« 返回 Arduino101 平台 IoT 专题
实验01：让板...
Getting started with Haskell
...second this. Also, since it's not obvious, here's a link to a downloadable pdf version of the tutorial: learnyouahaskell.com/learnyouahaskell.pdf The webdesign is great, but I like to have a copy for the subway too.
– Telemachus
Jun 18 '09 at 13:25
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No visible cause for “Unexpected token ILLEGAL”
...so could be happening if you're copying code from another document (like a PDF) into your console and trying to run it.
I was trying to run some example code out of a Javascript book I'm reading and was surprised it didn't run in the console.
Apparently, copying from the PDF introduces some unexpe...
App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...
...利用App Inventor 2开发一款自己专属的手机蓝牙App应用。BLE与经典蓝牙的区别可参考：《低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别》。本文主要通过一款常见的BLE硬件接入控制，介绍硬件接入App Inventor 2 的通用方法，类似的硬件接入...
App Inventor 2 数学积木完全指南：从加减乘除到位运算，一篇搞定所有计算...
...这在处理硬件通信、蓝牙数据时非常好用。
四、取整与舍入：三种方式各有妙用
积木说明示例四舍五入(round)小数部分 <0.5 向下，>0.5 向上；正好 0.5 时向偶数取整round(2.5)=2, round(3.5)=4上取整(ceiling)返回 >= 该数的最小...
How to perform better document version control on Excel files and SQL schema files
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[diff "xls"]
binary = true
textconv = /usr/bin/py_xls2txt
[diff "pdf"]
binary = true
textconv = /usr/bin/pdf2txt
[diff "doc"]
binary = true
textconv = /usr/bin/catdoc
[diff "docx"]
binary = true
textconv = /usr/bin/docx2txt
The Pro Git book has a good chapter on t...