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Full examples of using pySerial package [closed]
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Blog post Serial RS232 connections in Python
import time
import serial
# configure the serial connections (the parameters differs on the device you are connecting to)
ser = serial.Serial(
port='/dev/ttyUSB1',
baudrate=9600,
parity=serial.PAR...
Real life trading API [closed]
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AFAIK, TradeStation is the most famous of the lot. Most other trading softwares provide APIs (NinjaTrader, MetaStock etc). FWIW, there are even competitions of automated trading systems -- see this.
Also, this is something that the exchange...
Pro Camera 扩展：专业级自定义相机，提供滤镜、降噪、对焦等高级功能 · A...
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视觉AI（HarmonyVisionAI）使用指导 · App Inventor 2 中文网
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Change select box option background color
...ave a select box and I'm trying to change the background color of the options when the select box has been clicked and shows all the options.
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Explanation of …
...'ve never seen before. In the source of Backbone.js's example TODO application ( Backbone TODO Example ) they had their templates inside a <script type = "text/template"></script> , which contained code that looks like something out of PHP but with JavaScript tags.
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is it possible to update UIButton title/text programmatically?
...it, thanks. I really wish Objective-C would just throw a NullPointerException in cases like this, instead of silently pretending that it's OK to send a message to a nil object. This bites me almost daily... ugh!
– George Armhold
Jun 23 '09 at 17:26
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Delete keychain items when an app is uninstalled
...n take advantage of the fact that NSUserDefaults are cleared by uninstallation of an app. For example:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
//Clear keychain on first run in case of reinstallation
if (![[NSUserDefaults...
背包：将代码块复制并粘贴到不同的屏幕和项目 · App Inventor 2 中文网
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How to copy a file to multiple directories using the gnu cp command
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No, cp can copy multiple sources but will only copy to a single destination. You need to arrange to invoke cp multiple times - once per destination - for what you want to do; using, as you say, a loop or some other tool.
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