Struct spirit::Empty

pub struct Empty {}

A struct that may be used when either configuration or command line options are not needed.

When the application doesn't need the configuration (in excess of the automatic part provided by this library) or it doesn't need any command line options of its own, this struct can be used to plug the type parameter.

Trait Implementations

impl Copy for Empty

impl Clone for Empty

fn clone(&self) -> Empty

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Empty

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Default for Empty

fn default() -> Empty

Returns the "default value" for a type.

impl Eq for Empty

impl PartialEq for Empty

fn eq(&self, other: &Empty) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Hash for Empty

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].

impl Ord for Empty

fn cmp(&self, other: &Empty) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl PartialOrd for Empty

fn partial_cmp(&self, other: &Empty) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructOpt for Empty

fn clap<'a, 'b>() -> App<'a, 'b>

Returns the corresponding clap::App.

fn from_clap(matches: &ArgMatches) -> Self

Creates the struct from clap::ArgMatches. It cannot fail with a parameter generated by clap by construction.

fn from_args() -> Self

Gets the struct from the command line arguments. Print the error message and quit the program in case of failure.

fn from_iter<I>(iter: I) -> Self where     I: IntoIterator,     <I as IntoIterator>::Item: Into<OsString>,     <I as IntoIterator>::Item: Clone,

Gets the struct from any iterator such as a Vec of your making. Print the error message and quit the program in case of failure.

fn from_iter_safe<I>(iter: I) -> Result<Self, Error> where     I: IntoIterator,     <I as IntoIterator>::Item: Into<OsString>,     <I as IntoIterator>::Item: Clone,

Gets the struct from any iterator such as a Vec of your making.