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Thread Control Block The following is the declaration of the Thread Control Block. unsigned int status This field holds the status information of the 阅读全文
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Concurrency is when two tasks can start, run, and complete in overlapping time periods. Parallelism is when tasks literally run at the same time, eg. 阅读全文
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与动态语言有关的概念:1、反射 2、运行时 3、编译器、静态。 所谓的动态语言指的是语言单元的结构、行为、类型可以在运行时发生改变的语言。 可以动态添加新的类型; Dynamic programming language, in computer science, is a class of hig 阅读全文
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In object-oriented programming, a metaclass is a class whose instances are classes. Just as an ordinary class defines the behavior of certain objects, 阅读全文
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In some languages, classes are only a compile-time feature (new classes cannot be declared at runtime), while in other languages classes are first-cla 阅读全文
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eval is a function which evaluates a string as though it were an expression and returns a result; in others, it executes multiple lines of code as tho 阅读全文
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In computer science, the event loop, message dispatcher, message loop, message pump, or run loop is a programming construct that waits for and dispatc 阅读全文