co-log: Composable Contravariant Combinatorial Comonadic Configurable Convenient Loggingco-log: Composable Contravariant Combinatorial Comonadic Configurable Convenient Logging This blog post illustrates the architecture of the co-log library: a composable Haskell logging library that explores an alternative way of logging. I’m not going to cover how to implement the ElasticSearch backend for the logging library or how to make concurrent logging fast. Instead, the blog post explains
