Snobol4 语言 实战 信用卡号格式统一实战

Snobol4amuwap 发布于 4 天前 3 次阅读

Snobol4【1】 语言实战：信用卡号格式统一【2】实战

Snobol4 是一种古老的编程语言，最初于1962年由David J. Farber、Ralph E. Griswold 和 Ivan P. Polonsky 在美国贝尔实验室开发。它以其独特的文本处理【3】能力而闻名，尽管在现代编程语言中并不常见，但在某些特定领域，如文本处理和数据处理【4】，Snobol4 仍然有其独特的应用价值。

本文将围绕 Snobol4 语言，通过一个实战案例——信用卡号格式统一，来展示 Snobol4 在数据处理方面的能力。

信用卡号格式统一实战背景

信用卡号格式统一是指将不同格式的信用卡号转换成统一的格式，以便于后续的数据处理和存储。例如，将信用卡号从“1234-5678-9012-3456”转换为“1234567890123456”。

Snobol4 语言简介

Snobol4 是 Snobol 系列编程语言的第四个版本，它具有以下特点：

- 强大的文本处理能力
- 简洁的语法
- 高效的运行速度

Snobol4 的语法相对简单，主要由模式【5】（patterns）、动作【6】（actions）和变量【7】（variables）组成。

实战案例：信用卡号格式统一

以下是一个使用 Snobol4 语言编写的信用卡号格式统一程序。

```snobol
:cardnum
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