语句和关键字有什么区别? [英] What is the difference between a statement and a keyword?

问题描述

调用return声明后，它在评论中带给我:

After calling return a statement, it was brought out to me in the comments:

return不是语句，而是启动return语句的关键字.

return isn't a statement, it's the keyword that starts the return statement.

一条语句和开始一条语句的关键字有什么区别?

推荐答案

句子和以句子开头的名词有什么区别? ;-)

What's the difference between a sentence and a noun that starts a sentence? ;-)

return是关键字，表示它是该语言的一些基本术语(标记)之一.它们具有特权，每种特权都保留有特殊目的并具有特殊含义(将其与运行工厂的标识符/名称进行比较).

return is a keyword, which means it's one of a few basic terms (tokens) of the language. They are privileged, each reserved for a special purpose and having special meaning (compare this with run of the mill identifiers/names).

(从广义上来说-语言之间的特定差异)语句是语言的高级单元，类似于自然语言中的(某种特定类型的)句子.语句包括return 1+1;和foo(bar);，但通常不包括1+1或foo(bar)之类的表达式.

A statement is (in broad terms - specific differ between languages) a higher-level unit of the language, akin to (a particular kind of) sentence in natural language. Statements include return 1+1; and foo(bar);, but generally not expressions like 1+1 or foo(bar).

关键字通常构成语句的一部分(例如，return引入了return语句)，但是它们从来没有自己做出完整的语句-甚至return;仍然需要语句终止符.

Keywords often form part of statements (e.g. return introduces a return statement), but they never make a full statement on their own - even return; still needs a statement terminator.

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