amalloy

amalloy has asked 35 questions and find answers to 556 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

Profiling Two Functions That Sum Large List
Is this a correct usage of transients?
Is it possible to have an if function use pattern matching in Haskell?
Dynamic atoms in Clojure
Clojure macro puzzle: expanding sequence in macro args
Clojure can't pass list to a function Error PersistentList cannot be cast to clojure.lang.IFn
Interface which contains conj?
Removing nested values with Specter in Clojure
Memoize multi-dimensional recursive solutions in haskell
How to define function only for old versions in GHC?