amalloy

amalloy has asked 35 questions and find answers to 573 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

Automatically detect whether a Haskell function is tail recursive
Alternative of Show that only uses name
how to check if a nested key exists in a map
How do I spec higher order function arguments in Clojure?
Why do we see Arity related exceptions at runtime in Clojure?
Generate test cases for levenshtein distance implementation with quickCheck
(Sub)command synonyms for optparse-applicative
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