如何在MIT/GNU Scheme中读取文本文件? [英] How do I read a text file in MIT/GNU Scheme?

问题描述

我一直在经历SICP，我想应用到目前为止学到的一些概念.即积累，映射和过滤将帮助我提高工作效率.我主要使用CSV文件，并且我知道MIT/GNU方案不支持此文件格式.但这没关系，因为支持txt文件，因此我可以将CSV文件导出为txt文件.

I have been going through SICP and I would like to apply some of the concepts that I have learned so far. Namely accumulate, map and filter will help me be far more productive at work. I work mostly with CSV files and I know that MIT/GNU scheme does not support this file format. But that's ok as I can export the CSV file to txt file since txt files are supported.

现在，我阅读了本手册的第14节输入/输出"，坦率地说，缺少具体示例并没有帮助我入门.因此，我希望你们中的一些人能给我一个良好的开端.我有一个文本文件foo.txt，其中包含变量和对国家/地区列表的观察值.我只想将此文件读入Scheme中并处理数据.感谢您的帮助.任何示例代码都会有所帮助.

Now I read Section 14 Input/Output of the manual and frankly the lack of specific examples is not helping me get started. Therefore I am hoping some of you could give me a head start. I have a text file, foo.txt, consisting of variables and observations for a list of countries. I just want to read this file into Scheme and manipulate the data. Thank you for your help. Any sample code would be helpful.

推荐答案

(call-with-input-file "my_file.txt"
  (lambda (port)
    (read port))) ; reads the file's contents

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