22 lines
349 B
Go
22 lines
349 B
Go
package main
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import (
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"errors"
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"fmt"
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)
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var ErrDatabaseProblem = errors.New("database problem")
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func GetDataFromDB() error {
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return fmt.Errorf("failed to get data: %w", ErrDatabaseProblem)
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}
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func main() {
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err := GetDataFromDB()
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if errors.Is(err, ErrDatabaseProblem) {
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fmt.Println(err.Error())
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} else {
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fmt.Println("unknown error")
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}
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}
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