amalloy

amalloy has asked 35 questions and find answers to 564 problems.

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About

I play with Haskell and Clojure, and at work I develop Error Prone and other Java language tooling.

amalloy questions

Why is Postgres scanning a huge table instead of using my index?
How to create a limited version of the IO monad
How can I debug a non-responsive server, when the profiler can't collect samples?
How can I generate Modified http headers with Compojure?
Can I make git merge --ff act like --ff-only?
Working with data types parameterized by a functor
Mutually referring deftypes in Clojure
Why doesn't `coerce` implicitly apply Compose to these functions?
How to use recursion-schemes to `cata` two mutually-recursive types?
How to implement zip with foldl (in an eager language)

amalloy answers

Why does `MonadError` have a functional dependency?
how is a macro expanded in clojure?
Clojure function that waits on the completion of another function before executing
rankN type equivalent for mypy in python
How to write "twice" so it can accept "swap" without restricting their type
How to make selection with bar cursor the same as in browser
Deleting an element of a set
How to change this into a while loop in Haskell?
Profiling Two Functions That Sum Large List
Is this a correct usage of transients?