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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
...硬件提供的文档或厂商提供的java源码，一般会有提供。
一个硬件UUID示例如下：
UUID分为标准UUID和厂商自定义UUID
标准UUID：由SIG发布，采用UUID基数 + 16位UUID的形式，如心率服务的UUID是0x180D，使用的UUID基数是：00000000-0000-10...
Starting iPhone app development in Linux? [closed]
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To provide a differing response, I'm running OS X and Xcode on a virtualised (VMware) machine on Linux. CPU is a Core2Quad (Q8800), and it is perfectly fast. I found a prebuilt VM online (I'll leave it to you to find)
Xcode/iPhone development works perfectly, as does ...
Catch all JavaScript errors and send them to server
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Mozilla exposes GlobalEventHandlers.onerror: developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/…
– roland
Aug 21 '15 at 15:26
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input() error - NameError: name '…' is not defined
...>>> input("Enter your name: ")
Enter your name: dummy
Traceback (most recent call last):
File "<input>", line 1, in <module>
File "<string>", line 1, in <module>
NameError: name 'dummy' is not defined
Security considerations with Python 2.7's input:
Since what...
Python mysqldb: Library not loaded: libmysqlclient.18.dylib
I just compiled and installed mysqldb for python 2.7 on my mac os 10.6. I created a simple test file that imports
15 Answe...
.NET: Simplest way to send POST with data and read response
...rk.com/service", new NameValueCollection()
{
{ "home", "Cosby" },
{ "favorite+flavor", "flies" }
});
string result = System.Text.Encoding.UTF8.GetString(response);
}
You will need these includes:
using System;
using System.Collections.Specialized;
us...
Eclipse hangs at the Android SDK Content Loader
I've been working with Eclipse 4.2 (Juno release 20120920-0800) on OS X 10.8.2 for a few weeks now, building apps for Android 3.0 and above. I have a quad core i7 MacBook Pro with an SSD, so performance is not an issue. Everything was fine.
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How can I convert a datetime object to milliseconds since epoch (unix time) in Python?
... solution (if python version >2.7). Because the implementation of %s is OS dependent! Thus anyone want the code works reliably regardless on which OS, should NEVER use %s. For 2.3 < py ver <2.7. One can simply build a total_seconds() like this: delta.days*86400+delta.seconds+delta.microseco...
What can you use Python generator functions for?
I'm starting to learn Python and I've come across generator functions, those that have a yield statement in them. I want to know what types of problems that these functions are really good at solving.
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Importing files from different folder
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Note: This answer was intended for a very specific question. For most programmers coming here from a search engine, this is not the answer you are looking for. Typically you would structure your files into packages (see other answers) instead of modifying the search path.
By default, you c...