Define data class
Define a data class for reading and writing configurations.
Nullable Types
By appending ? to a type, you make it nullable.
data class Config(val message: String, val optionalMessage: String?)
message: "Message"
# -> Config("Message", null)
When you define a data class like this and load YAML that does not include optionalMessage, you will get a configuration object where message holds a value and optionalMessage is null.
Default Values
You can set default values for properties, which will be used if the corresponding configuration is missing.
data class Config(val message: String, val defaultMessage: String = "Default")
message: "Message"
# -> Config("Message", "Default")
When you define a data class like this and load YAML that does not include defaultMessage, you will get a configuration object where message holds a value and defaultMessage holds the default value of "Default".
Nesting
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Generics
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Comment
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Last modified: 20 November 2024