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52 lines
1.2 KiB
Go
52 lines
1.2 KiB
Go
// Copyright (c) 2023 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package file
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import (
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"context"
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"fmt"
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R "github.com/IBM/fp-go/context/readerioeither"
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F "github.com/IBM/fp-go/function"
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IO "github.com/IBM/fp-go/io"
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J "github.com/IBM/fp-go/json"
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)
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type RecordType struct {
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Data string `json:"data"`
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}
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func getData(r RecordType) string {
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return r.Data
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}
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func ExampleReadFile() {
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data := F.Pipe3(
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ReadFile("./data/file.json"),
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R.ChainEitherK(J.Unmarshal[RecordType]),
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R.ChainFirstIOK(IO.Logf[RecordType]("Log: %v")),
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R.Map(getData),
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)
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result := data(context.Background())
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fmt.Println(result())
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// Output:
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// Right[<nil>, string](Carsten)
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}
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