16:54 <dzoe> Hmmm.... errortrace really does have a huge performance impact.

16:54 <dzoe> But is super helpful when chasing very subtle errors.

17:03 <jA_cOp> Can I execute a module where the source file is standard input? I tried `racket -` but it tries to look for a file named `-`. It seems to work in load mode with `racket -f -`, but then it errors on the `#lang racket/base` directive. I'm trying to test a script on a remote machine like this: `ssh remote 'racket -' < myscript.rkt`

19:06 <yurb> How to best represent a monetary amount in Racket types so that the math is exact? Implement my own decimal type?

19:07 <grym> or do it in integer cents

20:07 <yurb> looking at the db module, I see `rational?` is used to represent postgres' `numeric` / `decimal` type without loss of precision

20:07 <yurb> https://docs.racket-lang.org/db/sql-types.html?q=db#%28part._postgresql-types%29

20:09 <yurb> so I guess I can rely on that

20:21 <yurb> did a little test with adding 0.1 + 0.2 retrieved from postgresql, out of curiosity: http://pasterack.org/pastes/52510

21:22 <yurb> string->number can produce exact numbers from decimals too, if needed: https://docs.racket-lang.org/reference/generic-numbers.html?q=decimal#%28def._%28%28quote._~23~25kernel%29._string-~3enumber%29%29

21:22 <rudybot> https://teensy.info/Fs28Kdc6CD