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Validate phone number with JavaScript
...fectly. It validates that the phone number is in one of these formats:
(123) 456-7890 or 123-456-7890
26 Answers
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串口通信器使用指导 · App Inventor 2 中文网
...通过手机串口进行通信；如果只需无线传输，使用蓝牙/BLE 通信可能是目前更主流的方案（详见 Iot 专题）。
手机串口通信模型如下：
可以看到，手机串口连接时，没有像 PC 那样指定“COM3”等端口，而是直接使用默认的 USB ...
手机串口调试助手：USB OTG 收发文本与十六进制、定时发送（附 .aia 源码）...
...election
if 串口通信器1.OpenSerial() {
计时器_接收.TimerEnabled = true
标签_串口状态.Text = join("已打开 ", 串口通信器1.BaudRate)
} else {
标签_串口状态.Text = "打开失败：检查 OTG 线，并在 USB 授权框里点确定"
}
}
when 计时器_接...
Best practice for partial updates in a RESTful service
...would I construct an URI if I want the system to send an email to customer 123? Something like a pure RPC method call that doesn't change the state of the object at all. What is the RESTful way of doing this?
– magiconair
Mar 14 '10 at 20:08
...
UDP 实验 - 两台手机在局域网里互发消息 · App Inventor 2 中文网
... 相关文档
UrsAI2UDP 拓展参考
低功耗蓝牙 BLE / 经典蓝牙 SPP：不走 WiFi 的另外两条路
您的改进建议 联系方式： 不需要回复的可留空~ 意见反馈（300字以内）： ...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...展示：仪表盘、柱状图、折线图、饼图
【数据表格】 TableView 拓展：数据表格视图，表格形式显示列表
【剪贴板】 Clipboard 拓展：实现剪贴板的复制粘贴功能
【Socket】 ClientSocketAI2Ext 拓展加强版：TCP/IP传输协议
【FTP】 FTP ...
How to output only captured groups with sed?
...e output as well as specifying what you do want.
string='This is a sample 123 text and some 987 numbers'
echo "$string" | sed -rn 's/[^[:digit:]]*([[:digit:]]+)[^[:digit:]]+([[:digit:]]+)[^[:digit:]]*/\1 \2/p'
This says:
don't default to printing each line (-n)
exclude zero or more non-digits
i...
Remove duplicate dict in list in Python
...that. However, with a few lines of code, you can also do that:
l = [{'a': 123, 'b': 1234},
{'a': 3222, 'b': 1234},
{'a': 123, 'b': 1234}]
seen = set()
new_l = []
for d in l:
t = tuple(d.items())
if t not in seen:
seen.add(t)
new_l.append(d)
print new_l
Ex...
Best way to work with dates in Android SQLite [closed]
...le values (
strftime('%Y-%m-%d %H:%M:%f', '2014-03-01 13:01:01.123'),
strftime('%Y-%m-%d %H:%M:%f', '2014-03-01 13:01:01.123'),
strftime('%Y-%m-%d %H:%M:%f', '2014-03-01 13:01:01.123')
);
sqlite> insert into test_table values (
strftime('%Y-...
AndroidRuntime error: Parcel: unable to marshal value
...on. Stepping through the debugger it seems that it adds the HashMap no problem, however when startActivty() is called I get a runtime error stating that Parcel: unable to marshal value com.appName.Liquor.
...