一、QThreadPool类介绍 QThreadPool 是 Qt 框架中用于管理线程池的类，它提供了一种高效的方式来管理和复用线程，避免频繁创建和销毁线程带来的开销。
I\'m running PHP 5.3.0. I\'ve found that the curly string syntax only works when the first character of the expression is $. Is there a way to include other types of expressions (function calls, etc)?
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