undefined | Better HN

0 pointslelanthran2y ago0 comments

> Fairly simple things like [1,2] < [10,2] return false (unlike every other language I’ve ever used)

What other languages, besides Python, does this builtin list comparison work in? What's the result when the comparison is `[1, 2] < ["10", "2"]`?

0 comments

I've never seen this usage of list comparison before but apparently it works in Rust (both of these print true):

println!("{}", vec![1, 2] < vec![10, 2]); println!("{}", (1, 2) < (10, 2));

List comparison works lexicographically in Haskell, C++ (using std::vector or std::array), Rust, GAP, every language I personally use.

Comparing strings and bits is always going to be weird, so I’ve not tested it.

j / k navigate · click thread line to collapse

0 pointslelanthran2y ago0 comments

> Fairly simple things like [1,2] < [10,2] return false (unlike every other language I’ve ever used)

What other languages, besides Python, does this builtin list comparison work in? What's the result when the comparison is `[1, 2] < ["10", "2"]`?

I've never seen this usage of list comparison before but apparently it works in Rust (both of these print true):

println!("{}", vec![1, 2] < vec![10, 2]); println!("{}", (1, 2) < (10, 2));

List comparison works lexicographically in Haskell, C++ (using std::vector or std::array), Rust, GAP, every language I personally use.

Comparing strings and bits is always going to be weird, so I’ve not tested it.

j / k navigate · click thread line to collapse