Package usages provides a mechanism to insert and recover richer usage information (eg whether a flag is required, whether it contains sensitive information) into and from a flag.Flag usage string, respectively.

Enumerate returns a slice containing all Flags in the Flagset.

EnvKey produces a namespaced environment variable key, concatenates a prefix and key with an infix underscore, replacing all non-alphanumeric, non-underscore characters with underscores, and upper-casing the entire string.

IsSet indicates whether a given Flag in a FlagSet has been set or not.

NewChoice produces a Choice with a set of allowed values.

NewFromEnv produces a FromEnv, using the provided FlagSet and scopes.

NewHostPort constructs a HostPort from the given string.

NewHostPortWithDefaultPort constructs a HostPort from the given host:port and a port lookup function.

NewMockFromEnv creates a new mock instance.

NewStrings produces a Strings with the default delimiter (",").

NewStringsWithConstraint produces a Strings with a set of allowed values and the default delimiter (",").

NewTestFlagSet creates a new FlagSet suitable for tests.

NewTimestamp creates a new Timestamp with the given default time.

Wrap converts an existing *flag.FlagSet into a FlagSet with no scope.

TimestampConversionFencepost represents an integer time value.

Choice conforms to the flag.Value and flag.Getter interfaces, and can be used populate a slice of strings from a flag.Flag.

HostPort represents the value of a TCP host:port flag.

MockFromEnv is a mock of FromEnv interface.

MockFromEnvMockRecorder is the mock recorder for MockFromEnv.

Strings conforms to the flag.Value and flag.Getter interfaces, and can be used populate a slice of strings from a flag.Flag.

Timestamp conforms to the flag.Value and flag.Getter interfaces.

ConstrainedValue is a flag.Value with constraints on it assigned value.

FlagSet represents an optionally scoped *flag.FlagSet.

FromEnv supports operations on a FlagSet based on environment variables.

TestFlagSet represents an optionally scoped FlagSet for tests.