Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

From https://people.csail.mit.edu/gregs/ll1-discuss-archive-html/... (the koan below is a bit worn out but the email thread is also enlightening)

The venerable master Qc Na was walking with his student, Anton. Hoping to prompt the master into a discussion, Anton said "Master, I have heard that objects are a very good thing - is this true?" Qc Na looked pityingly at his student and replied, "Foolish pupil - objects are merely a poor man's closures."

Chastised, Anton took his leave from his master and returned to his cell, intent on studying closures. He carefully read the entire "Lambda: The Ultimate..." series of papers and its cousins, and implemented a small Scheme interpreter with a closure-based object system. He learned much, and looked forward to informing his master of his progress.

On his next walk with Qc Na, Anton attempted to impress his master by saying "Master, I have diligently studied the matter, and now understand that objects are truly a poor man's closures." Qc Na responded by hitting Anton with his stick, saying "When will you learn? Closures are a poor man's object." At that moment, Anton became enlightened.



Thanks for the reminder of this thread!

For those who don't know, Guy L. Steele (Anton's interlocutor here) is the original designer of the Scheme programming language, the author of the "Lambda: The Ultimate Zozo" series of papers, and the second biggest contributor to the design of Java.


People get passionate about how to move around a bunch of 1s and 0s.


Sometimes lives depend on it. Usually they don't.




Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: