ConnectionIO implements MonadError, so you can return a failed effect from your implementation, e.g.: - Adam Warski - Medium

Hey, great article

Nimrod Avni

Dec 7, 2020

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ConnectionIO implements MonadError, so you can return a failed effect from your implementation, e.g.:

new RuntimeException("DB error").raiseError[ConnectionIO, Unit]

Adam Warski

Written by Adam Warski

Software engineer, Functional Programming and Scala enthusiast, SoftwareMill co-founder

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