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App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
... Queuing Telemetry Transport：消息队列遥测传输）
MQTT 发明于 1999 年，为物联网设计的轻量级协议，基于TCP协议实现。
MQTT 协议文档：https://mqtt.org/
虽然 App Inventor 有现成的 MQTT 扩展，但它们需要额外的 JavaScript 或外部...
How can I selectively escape percent (%) in Python strings?
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>>> test = "have it break."
>>> selectiveEscape = "Print percent %% in sentenc...
How can I create an Asynchronous function in Javascript?
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What is the difference between active and passive FTP?
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edited Apr 19 '18 at 6:38
answered Nov 9 '09 at 4:57
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Getting the last argument passed to a shell script
$1 is the first argument.
$@ is all of them.
27 Answers
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How to stop a PowerShell script on the first error?
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$ErrorActionPreference = "Stop" will get you part of the way there (i.e. this works great for c...
MySQL Query GROUP BY day / month / year
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Converting from longitude\latitude to Cartesian coordinates
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answered Jul 26 '09 at 21:04
bn.bn.
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Compare JavaScript Array of Objects to Get Min / Max
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