V2EX curly brace

Curly Brace

释义 Definition

curly brace(也叫 curly bracket)指“花括号”,形状为 **{ }**。常用于数学中表示集合、分段函数,或在编程中表示代码块、对象字面量等。(在英式英语里也常把 brace 用作“括号”类符号的统称之一。)

发音 Pronunciation

/kli bres/

例句 Examples

Please put the list in curly braces.
请把这个列表放在花括号里。

In many programming languages, curly braces define the scope of a function, so forgetting one can cause errors that are hard to trace.
在许多编程语言中,花括号用来界定函数的作用域,所以漏掉一个可能会导致难以排查的错误。

词源 Etymology

curly 来自“卷曲的、弯曲的”,描述符号的弧形外观;brace 原意有“支撑、固定”之意,后来在排版与数学符号语境中引申为“成对出现、把内容‘括’起来的符号”。因此 curly brace 字面上就是“卷曲形状的成对括号”。

相关词 Related Words

文学与著作 Literary Works

  • The C Programming Language(Kernighan & Ritchie):讲解 C 语言中用 { } 表示复合语句与代码块。
  • Clean Code(Robert C. Martin):在代码风格与可读性讨论中涉及花括号的使用与格式。
  • Javascript: The Good Parts(Douglas Crockford):讨论 Javascript 对象字面量与代码块时频繁使用 **{ }**。
  • The TeXbook(Donald E. Knuth):排版系统 TeX 中用花括号表示分组(grouping)与参数范围。
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