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42 lines
720 B
Go
42 lines
720 B
Go
package file
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import (
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"context"
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"fmt"
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RIO "github.com/IBM/fp-go/context/readerio"
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R "github.com/IBM/fp-go/context/readerioeither"
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"github.com/IBM/fp-go/errors"
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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.Pipe4(
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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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R.GetOrElse(F.Flow2(
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errors.ToString,
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RIO.Of[string],
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)),
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)
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result := data(context.Background())
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fmt.Println(result())
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// Output: Carsten
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}
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