Why is my Go YAML struct remaining empty after unmarshaling?

Go Unmarshaling YAML into struct

In Go, you can parse YAML data into a struct using the Unmarshal function from the gopkg.in/yaml.v2 package. Recently, a developer encountered an issue where their config struct remained empty after parsing YAML data.

To resolve this issue, the developer failed to export the fields in their struct. By exporting the fields (using uppercase names), the correct parsing behavior is achieved.

type Config struct {
    FooBar string `yaml:"foo_bar"`
}

With the struct fields exported, the ParseYAMLConfig function can correctly Unmarshal the YAML data into the struct, making the populated config available for use.

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