Trait Boolinator

pub trait Boolinator: Sized {
    // Required methods
    fn as_option(self) -> Option<()>;
    fn as_some<T>(self, some: T) -> Option<T>;
    fn as_some_from<T, F>(self, some: F) -> Option<T>
       where F: FnOnce() -> T;
    fn and_option<T>(self, opt: Option<T>) -> Option<T>;
    fn and_option_from<T, F>(self, opt: F) -> Option<T>
       where F: FnOnce() -> Option<T>;
    fn as_result<T, E>(self, ok: T, err: E) -> Result<T, E>;
    fn as_result_from<T, E, F, G>(self, ok: F, err: G) -> Result<T, E>
       where F: FnOnce() -> T,
             G: FnOnce() -> E;
    fn ok_or<E>(self, err: E) -> Result<(), E>;
    fn ok_or_else<E, G>(self, err: G) -> Result<(), E>
       where G: FnOnce() -> E;
    fn expect(self, msg: &str);
}

This trait defines a number of combinator-style methods for use with bool values.

In general, true/false map to Some(_)/None and Ok(_)/Err(_) respectively.

Required Methods

fn as_option(self) -> Option<()>

If this value is true, returns Some(()); None otherwise.

fn as_some<T>(self, some: T) -> Option<T>

If this value is true, returns Some(some); None otherwise.

fn as_some_from<T, F>(self, some: F) -> Option<T>

where F: FnOnce() -> T,

If this value is true, returns Some(some()); None otherwise.

fn and_option<T>(self, opt: Option<T>) -> Option<T>

If this value is true, returns opt; None otherwise.

fn and_option_from<T, F>(self, opt: F) -> Option<T>

where F: FnOnce() -> Option<T>,

If this value is true, returns opt(); None otherwise.

fn as_result<T, E>(self, ok: T, err: E) -> Result<T, E>

If this value is true, returns Ok(ok); Err(err) otherwise.

fn as_result_from<T, E, F, G>(self, ok: F, err: G) -> Result<T, E>

where F: FnOnce() -> T, G: FnOnce() -> E,

If this value is true, returns Ok(ok()); Err(err()) otherwise.

fn ok_or<E>(self, err: E) -> Result<(), E>

If this value is true, returns Ok(()); Err(err) otherwise.

fn ok_or_else<E, G>(self, err: G) -> Result<(), E>

where G: FnOnce() -> E,

If this value is true, returns Ok(()); Err(err()) otherwise.

fn expect(self, msg: &str)

If this value is true, panics with msg; does nothing otherwise.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Boolinator for bool

fn as_option(self) -> Option<()>

fn as_some<T>(self, some: T) -> Option<T>

fn as_some_from<T, F>(self, some: F) -> Option<T>

where F: FnOnce() -> T,

fn and_option<T>(self, opt: Option<T>) -> Option<T>

fn and_option_from<T, F>(self, opt: F) -> Option<T>

where F: FnOnce() -> Option<T>,

fn as_result<T, E>(self, ok: T, err: E) -> Result<T, E>

fn as_result_from<T, E, F, G>(self, ok: F, err: G) -> Result<T, E>

where F: FnOnce() -> T, G: FnOnce() -> E,

fn ok_or<E>(self, err: E) -> Result<(), E>

fn ok_or_else<E, G>(self, err: G) -> Result<(), E>

where G: FnOnce() -> E,

fn expect(self, msg: &str)

Implementors