fused-effects-squeal/README.md

fused-effects-squeal

This is an overview of the way this library works. If you would like to learn how Squeal itself works you should head to the morphismtech/squeal repository.

Usage

There are two sepaeate effects with corresponding carriers: Squeal (with SquealC) and SquealPool (with SquealPoolC).

Squeal mimics the functions from MonadPQ (from squeal-postgresql) and represnts the "inside a transaction" effect.

You can run it directly with runSquealWithConn family of functions, but you probably want to use a connection pool.

SquealPool allows you to call runSqueal function, which picks a connection from the connection pool and runs the Squeal effect.