V2EX bytecode

Bytecode

定义 Definition

Bytecode(字节码)是一种中间代码形式,由源代码编译而成,但并非直接由硬件执行,而是由虚拟机(如 Java 虚拟机或 Python 解释器)解释执行。它介于人类可读的源代码和机器码之间,是现代编程语言实现跨平台运行的关键技术。

发音 Pronunciation

/bat.kod/

词源 Etymology

Bytecodebyte(字节)和 code(代码)两个词合成而来。Byte 一词在20世纪50年代由IBM工程师创造,指代8位二进制数据单元;code 源自拉丁语 codex,意为"书写系统"。合在一起,bytecode 字面意思是"以字节为单位编码的指令",最早在20世纪70年代随着 Pascal P-code 等早期虚拟机技术的出现而被广泛使用。

例句 Examples

The Python interpreter compiles your script into bytecode before executing it.
Python 解释器在执行脚本之前,会先将其编译为字节码。

One advantage of bytecode is that it enables programs to run on any platform that has a compatible virtual machine, eliminating the need to recompile the source code for each operating system.
字节码的一个优势在于,它使程序能够在任何拥有兼容虚拟机的平台上运行,无需为每个操作系统重新编译源代码。

相关词汇 Related Words

文学与技术文献引用 Notable References

  • 《Structure and Interpretation of Computer Programs》(Harold Abelson & Gerald Jay Sussman)书中深入讨论了代码的编译与解释过程,涉及字节码相关概念。
  • 《Java Virtual Machine Specification》(Tim Lindholm & Frank Yellin)Java 虚拟机规范的权威文献,详细定义了 Java bytecode 的结构与执行方式。
  • 《CPython Internals》(Anthony Shaw)深入剖析了 Python 解释器如何将源代码转换为 bytecode 并执行的全过程。
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