Get a named value from the arguments, throwing an exception if not found.
Get a named value from the arguments, throwing an exception if not found.
the name of the parameter to retrieve
the value
if not found
Get a named value from the arguments.
Get a named value from the arguments.
the name of the parameter to retrieve
Some(value)
if found, None
if not.
Get a named value from the arguments, supplying a default if not found.
Get a named value from the arguments, supplying a default if not found.
the name of the parameter to retrieve
the retrieved value, or default
if not found.
Get the argument map.
Get the argument map.
the map
Provide a reasonable string representation.
Provide a reasonable string representation.
a string representation
Arguments for a formatter or handler.