// Copyright (c) 2023 IBM Corp. // All rights reserved. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package ioeither import ( "fmt" E "github.com/IBM/fp-go/either" F "github.com/IBM/fp-go/function" IO "github.com/IBM/fp-go/io" ) func ExampleIOEither_extraction() { // IOEither someIOEither := Right[error](42) eitherValue := someIOEither() // E.Right(42) value := E.GetOrElse(F.Constant1[error](0))(eitherValue) // 42 // Or more directly infaillibleIO := GetOrElse(F.Constant1[error](IO.Of(0)))(someIOEither) // => IO.Right(42) valueFromIO := infaillibleIO() // => 42 fmt.Println(eitherValue) fmt.Println(value) fmt.Println(valueFromIO) // Output: // Right[, int](42) // 42 // 42 }