I doubt anyone but me will try this, but here we go.
Sunday programming challenge!
Implement:
$ grep -B n regex
$ grep -A n regex
$ grep -C n regex
Plus points if it:<li>works on line sequences (e.g split file contents on \n)</li><li>works on your platform's native reader type of your language (e.g java.lang.Reader or io.Reader)</li><li>handles all edge cases</li><li>'s realtime (e.g $ grep -A 1 foo will forward "foo" immediately, not wait until the next line is read)</li><li>implements the command line interface</li><li>implements the context span separators "--" (bsd grep doesn't implement this)</li><li>uses your own bespoke regular expression engine</li>
and a star in my book if you find an appropriate generic abstraction capturing the essence of the problem! *couch*<li>Posting unfinished solutions is encouraged!</li><li>Posting revamps is encouraged!</li><li>Taking inspiration from other solutions is encouraged!</li>
(parenthesis! (of (pair (free (a (gets (Winner)))))))
Be warned, this is very edgy so don't cut yourself!
Good luck!
#emacs #lisp #vim #c
shikanoko nokonoko /
npub13e…pw73a
2024-08-11 08:37:04
Author Public Key
npub13ekvakh3kyjqz47r2pckkgnf4a8h9gmmm9smwu5ha7fqzrd6xuwqhpw73aPublished at
2024-08-11 08:37:04Event JSON
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"content": "I doubt anyone but me will try this, but here we go.\n\n Sunday programming challenge!\n\nImplement:\n\n$ grep -B n regex\n\n$ grep -A n regex\n\n$ grep -C n regex\n\nPlus points if it:\u003cli\u003eworks on line sequences (e.g split file contents on \\n)\u003c/li\u003e\u003cli\u003eworks on your platform's native reader type of your language (e.g java.lang.Reader or io.Reader)\u003c/li\u003e\u003cli\u003ehandles all edge cases\u003c/li\u003e\u003cli\u003e's realtime (e.g $ grep -A 1 foo will forward \"foo\" immediately, not wait until the next line is read)\u003c/li\u003e\u003cli\u003eimplements the command line interface\u003c/li\u003e\u003cli\u003eimplements the context span separators \"--\" (bsd grep doesn't implement this)\u003c/li\u003e\u003cli\u003euses your own bespoke regular expression engine\u003c/li\u003e\n\nand a star in my book if you find an appropriate generic abstraction capturing the essence of the problem! *couch*\u003cli\u003ePosting unfinished solutions is encouraged!\u003c/li\u003e\u003cli\u003ePosting revamps is encouraged!\u003c/li\u003e\u003cli\u003eTaking inspiration from other solutions is encouraged!\u003c/li\u003e\n\n(parenthesis! (of (pair (free (a (gets (Winner)))))))\n\nBe warned, this is very edgy so don't cut yourself!\n\nGood luck!\n\n#emacs #lisp #vim #c",
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