package caqti

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in-package search v0.2.0

Unified interface to relational database libraries

Install

sha256=7eb57225c521fe25395653d960b1c381bb2b2ccae47bc2a827bb16611988da8b

sha512=eeafaf495b08fb8620ddee1711b8f9fa2ca0c79fb450a905c8d071806b7046d665e1e2ac0e7d3c7ca1258455decbf184e689e9ecb2453ec9d952b864f9dd14f4

type +'a t

A concurrency monad with an optional failure monad, or just the identity type constructor for blocking operation.

module Infix : sig ... end

val return : 'a -> 'a t

Return operation of the concurrency monad.

val catch : (unit -> 'a t) -> (exn -> 'a t) -> 'a t

val finally : (unit -> 'a t) -> (unit -> unit t) -> 'a t

finally f g runs f () and then runs g () whether the former finished, failed with an exception, or failed with a monadic failure.

val cleanup : (unit -> 'a t) -> (unit -> unit t) -> 'a t

cleanup f g runs f () and then runs g () and re-raise the failure if and only if f () failed with an exception or a monadic failure.