# Functions
NewOptionalIntValue returns the pflag.Value of the int.
NewOptionalStringValue returns a pflag.Value for the string.
OptionalBoolFlag creates new flag for an optional in the specified flag with the specified name and usage.
# Structs
OptionalBool is a boolean with a separate presence flag and value.
OptionalInt is a int with a separate presence flag.
OptionalString is a string with a separate presence flag.