Top posts

Every blog post that took off on Hacker News, ranked by the votes of its best submission. 5,637 posts.

Programming Languages
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4621

Racket v8.2

_posted by John Clements_ Racket version 8.2 is now available from https://download.racket-lang.org. Racket CS improved the performance of large-integer arithmetic. Racket has improved support for layered and tethered installation. Racket ...

4640

Lisp: More is less

There’s recently been a resurgence of interest in Lisp (specifically, Clojure) in my neighborhood. I have some kind of a fondness for Lisp, but I think some of its characteristics make it poorly suited for use in large programming efforts. Indeed many of the unique properties that Lisp devotees (myself once included)…

4642

Sum Types Are Coming (2015)

Just as all mainstream languages now have lambda functions, I predict sum types are the next construct to spread outward from the typed functional programming community to the mainstream. Sum types are very useful, and after living with them in Haskell for a while, I miss them deeply when using languages without them…

4644

The myth of the Lisp genius

I'm fascinated by the myth of the Lisp genius, the eccentric programmer who accomplishes super-human feats writing Lisp. I'm not saying that such geniuses don't exist; they do. Here I'm using "myth" in the sense of a story with archetypical characters that fuels the imagination. I'm thinking myth in the sense of…

4650

The Value of Undefined Behavior

In several places, the C and C++ language specifications use a curious, and fairly controversial, phrase: undefined behavior . For certain program constructs, the specification prescribes no specific behavior, instead allowing anything to happen . Such constructs are considered erroneous, and so the result depends on…