Fix retryIf example in README

brandonchinn178 · brandonchinn178 · commit ed174c9665a9 · 2021-12-17T09:36:48.000-08:00
diff --git a/README.md b/README.md
@@ -239,7 +239,7 @@ import Database.PostgreSQL.Simple.Errors (isSerializationError)
 main :: IO ()
 main = withPostgresqlPool "..." 5 $ \pool -> do
   let env = mkSqlQueryEnv pool $ \env -> env
-        { retryIf = isSerializationError . fromException
+        { retryIf = maybe False isSerializationError . fromException
         , retryLimit = 100 -- defaults to 10
         }
 

Original file line number	Diff line number	Diff line change
`@@ -239,7 +239,7 @@ import Database.PostgreSQL.Simple.Errors (isSerializationError)`
`239`	`239`	`main :: IO ()`
`240`	`240`	`main = withPostgresqlPool "..." 5 $ \pool -> do`
`241`	`241`	`let env = mkSqlQueryEnv pool $ \env -> env`
`242`		`- { retryIf = isSerializationError . fromException`
	`242`	`+ { retryIf = maybe False isSerializationError . fromException`
`243`	`243`	`, retryLimit = 100 -- defaults to 10`
`244`	`244`	`}`
`245`	`245`