Struct spirit::Empty [−][src]
pub struct Empty {}
Expand description
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.
Other places (eg. around extensions) may use this to plug a type parameter that isn’t needed, do nothing or something like that.
Trait Implementations
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
Returns the documentation for the type. Read more
Builds the struct from clap::ArgMatches
. It’s guaranteed to succeed
if matches
originates from an App
generated by StructOpt::clap
called on
the same type, otherwise it must panic. Read more
Builds the struct from the command line arguments (std::env::args_os
).
Calls clap::Error::exit
on failure, printing the error message and aborting the program. Read more
Builds the struct from the command line arguments (std::env::args_os
).
Unlike StructOpt::from_args
, returns clap::Error
on failure instead of aborting the program,
so calling .exit
is up to you. Read more
fn from_iter<I>(iter: I) -> Self where
I: IntoIterator,
<I as IntoIterator>::Item: Into<OsString>,
<I as IntoIterator>::Item: Clone,
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. Read more
fn from_iter_safe<I>(iter: I) -> Result<Self, Error> where
I: IntoIterator,
<I as IntoIterator>::Item: Into<OsString>,
<I as IntoIterator>::Item: Clone,
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. Read more
Auto Trait Implementations
impl RefUnwindSafe for Empty
impl UnwindSafe for Empty
Blanket Implementations
Mutably borrows from an owned value. Read more