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ComponentGroup 组件组扩展：监控内容变化和批量启用禁用组件 · App Inventor 2 中文网
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ComponentGroup 扩展解决了 App Inventor 中的两个常见问题：
内容变化检测：无需使用复杂的定时器和值比较即可检测组件内容是否被修改
批量启用/禁用：一次性启用或禁用一组组件（例如在考试期间禁用输入区域）
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How to convert UTF-8 byte[] to string?
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@maazza for unknown reason it doesn't at all. I'm calling it like System.Text.Encoding.UTF8.GetString(buf).TrimEnd('\0');.
– Hi-Angel
Jul 27 '15 at 7:53
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How to merge two sorted arrays into a sorted array? [closed]
...ed an index out of bounds exception what inputs are you using? It works in all cases for me.
– Mike Saull
Mar 25 '13 at 4:35
1
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Creating an object: with or without `new` [duplicate]
...ng to some specific implementation (say, a computer with an x86-compatible CPU) is needlessly restrictive and leads to a lack of rigour/provability within the scope of the rules defined by the C++ standard. The C++ standard gives rules about storage duration, not about some hypothetical data structu...
How to use wait and notify in Java without IllegalMonitorStateException?
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To be able to call notify() you need to synchronize on the same object.
synchronized (someObject) {
someObject.wait();
}
/* different thread / object */
synchronized (someObject) {
someObject.notify();
}
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JavaScript sleep/wait before continuing [duplicate]
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this locks the browser, is cpu intensive, causes execution interruption on mobile devices if paused time is too long
– Paolo
Jan 26 '14 at 11:24
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Windows启动过程 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...依赖这些驱动，下表列出了初始的系统驱:
然后再设置CPU的寄存器的值，等等。这些任务完成后，ntldr把系统控制权交给进程ntoskrnl.exe (NT OS Kernel),它的使命就完成了。
NTOSKRNL是主要负责启动以下OS服务（此时你能看到的Windows XP...
Something like 'contains any' for Java set?
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Actually it will short-circuit as soon as it finds the first common element
– Xipo
Dec 15 '16 at 10:54
3
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Converting .NET DateTime to JSON [duplicate]
My webs service is returning a DateTime to a jQuery call. The service returns the data in this format:
10 Answers
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MySQL select 10 random rows from 600K rows fast
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Yes, if you have potentially big gaps in ID's then the chance of your lowest ID's being picked randomly is much lower than your high IDs. In fact the chance that the first ID after the biggest gap getting picked is actually the highest. Therefore th...