LookupValue is a function which maps from variable names to values. Returns the value as a string and a bool indicating whether the value is present, to distinguish between an empty string and the absence of a value.
func(key string) (string, bool)
| 26 | // the value is present, to distinguish between an empty string |
| 27 | // and the absence of a value. |
| 28 | type LookupValue func(key string) (string, bool) |
| 29 | |
| 30 | // Cast a value to a new type, or return an error if the value can't be cast |
| 31 | type Cast func(value string) (any, error) |
nothing calls this directly
no outgoing calls
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