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怎么解决MQTT连接掉线，自动连接问题，同时解决，反复断开连接，断开连接问...
...设置MQTT连接吗，是不是可以统一设置一个？https://www.fun123.cn/reference/iot/MQTT.html
文档正在翻译进度过半。
试了，切走页面，又切回来，是 0，连接上是2。你通过这个状态进行一个判断，不要让你那个对话框总弹出。
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想试着做一个间歇运动的计时器 - App应用开发 - 清泛IT社区，为创新赋能！
...努力的目标{:8_402:}
计时器用法参考这里：https://www.fun123.cn/reference/components/guide/Clock.html
标签的“具有外边距”有啥用？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
https://www.fun123.cn/reference/ ... ml#Label.HasMargins
待研究。
Object lp = view.getLayoutParams();
    // The following instanceof check will fail if we have not previously
    // added the label to the container (Why?)
    if (lp instanceof ViewGroup.Margin...
WheelView：滚轮选择框扩展 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...s://wangsk789.github.io/wheelview/
更多滚轮拓展见：https://www.fun123.cn/reference/ ... arty/wheelview.html
Way to get all alphabetic chars in an array in PHP?
...118] => DO [119] => DP [120] => DQ [121] => DR [122] => DS [123] => DT [124] => DU )
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编译失败！ Error: Your build failed due to an error in the AAPT stage,...
...Server$1 run
     [java] INFO: CallbackURL: http://fun123.cn/ode2/receivebui ... yoqln/build/Android
     [java] May 30, 2023 9:29:27 AM com.google.appinventor.buildserver.BuildServer checkMemory
     [java] INFO: Build 1 current used me...
Is it possible to specify condition in Count()?
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AdaTheDevAdaTheDev
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Convert string to a variable name
...reg mentioned, assign to assign the variables.
original_string <- c("x=123", "y=456")
pairs <- strsplit(original_string, "=")
lapply(pairs, function(x) assign(x[1], as.numeric(x[2]), envir = globalenv()))
ls()
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Base64 Java encode and decode a string [duplicate]
...ring str = new String(DatatypeConverter.printBase64Binary(new String("user:123").getBytes()));
String res = DatatypeConverter.parseBase64Binary(str);
System.out.println(res);
}
}
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Add leading zeroes to number in Java? [duplicate]
... If Java 1.4 and below, try new DecimalFormat("00000").format(123); as shown here javadevnotes.com/java-integer-to-string-with-leading-zeros
– JavaDev
Mar 5 '15 at 3:37
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