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App Inventor 2 如何比较两个日期/时间? - App Inventor 2 文网 - 清泛I...

利用计时器组件相关方法: 比较两个日期/时间对象毫秒数,具体请参见文档:https://www.fun123.cn/reference/ ... tml#Clock.GetMillis 即时时间获取方法: 1、日期/时间选择框选 2、利用“计时器”组件自己创建,通过...
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AppInventor2能画数据波形图吗? - App应用开发 - 清泛IT社区,为创新赋能!

...学长: Q:数据波形图可以吗  就通过单片机上发数据 实时更新显示波形 类似这种,实时更新上传数据为波形 A:图表组件可以画出这种图 Q:响应速度 ms级别能跟上吗 A:这个倒是没有测试过。mark一下...
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【已解决】ERROR: Compile R Classes returned E=1 - 用户反馈 - 清泛IT社区,为创新赋能!

...译则报错。 [hide]最终发现,是由于项目名全数字导致问题(也许是数字开头导致),可能是用户改了文件名再导入导致问题。 正常情况下,新建项目/项目改名都是能够拦截全数字项目名称。 [/hide]
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AppInventor2 如何自定义包名? - App应用开发 - 清泛IT社区,为创新赋能!

...tor2 如何自定义包名? Q: 如何自定义包名?编译后下载APK包名一大堆乱七八糟? A: 编译菜单,编译参数设置: Q: 有没什么特殊项命名要求?后面需要加什么.cn,.com之类字符? A: 至少要有一个英文点(...
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下拉框扩展 - App应用开发 - 清泛IT社区,为创新赋能!

软件自带下拉框,太简单了,想请问下,有没有相应扩展,可以方便修改下拉框颜色,字体,外形这些?
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Difference between FetchType LAZY and EAGER in Java Persistence API?

I am a newbie to Java Persistence API and Hibernate. 15 Answers 15 ...
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Java regular expression OR operator

....new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f2031805%2fjava-regular-expression-or-operator%23new-answer', 'question_page'); } ); Post as a guest ...
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How to retrieve a file from a server via SFTP?

...ing to retrieve a file from a server using SFTP (as opposed to FTPS) using Java. How can I do this? 16 Answers ...
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What is PECS (Producer Extends Consumer Super)?

... syntax and assumes declaration-site variance, which is quite different to Java's weird call-site variance... Maybe I should write a more detailed answer that clearly shows how this sketch applies to Java... – Andrey Tyukin Jun 15 '14 at 23:11 ...
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Case insensitive string as HashMap key

...ct = {} or var struct = structnew() you can use var struct = createObject('java','java.util.TreeMap').init(createObject('java','java.lang.String').CASE_INSENSITIVE_ORDER); FUGLY, but it works ;) – Eric Fuller Nov 27 '14 at 4:09 ...