Enum optional::OptionBool [−] [src]

pub enum OptionBool {
    SomeTrue,
    SomeFalse,
    None,
}

Variants

SomeTrueSomeFalseNone

Methods

impl OptionBool
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fn is_some(&self) -> bool

fn is_none(&self) -> bool

fn expect(&self, msg: &str) -> bool

fn unwrap(&self) -> bool

fn unwrap_or(&self, def: bool) -> bool

fn unwrap_or_else<F>(self, f: F) -> bool where F: FnOnce() -> bool

fn map<U, F>(self, f: F) -> Option<U> where F: FnOnce(bool) -> U

fn map_bool<F>(self, f: F) -> OptionBool where F: FnOnce(bool) -> bool

fn map_or<U, F>(self, default: U, f: F) -> U where F: FnOnce(bool) -> U

fn map_or_else<U, D, F>(self, default: D, f: F) -> U where D: FnOnce() -> U, F: FnOnce(bool) -> U

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

fn ok_or_else<E, F>(self, err: F) -> Result<bool, E> where F: FnOnce() -> E

fn and<U>(self, optb: Option<U>) -> Option<U>

fn and_bool(self, optb: OptionBool) -> OptionBool

fn and_then<U, F>(self, f: F) -> Option<U> where F: FnOnce(bool) -> Option<U>

fn and_then_bool<F>(self, f: F) -> OptionBool where F: FnOnce(bool) -> OptionBool

fn or(self, optb: Option<bool>) -> Option<bool>

fn or_bool(self, optb: OptionBool) -> OptionBool

fn or_else<F>(self, f: F) -> Option<bool> where F: FnOnce() -> Option<bool>

fn or_else_bool<F>(self, f: F) -> OptionBool where F: FnOnce() -> OptionBool

fn iter(&self) -> Iter

fn take(&mut self) -> Option<bool>

Trait Implementations

impl Hash for OptionBool
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fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the state given, updating the hasher as necessary.

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher
1.3.0

Feeds a slice of this type into the state provided.

impl Ord for OptionBool
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fn cmp(&self, __arg_0: &OptionBool) -> Ordering

This method returns an Ordering between self and other. Read more

impl Eq for OptionBool
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impl Clone for OptionBool
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fn clone(&self) -> OptionBool

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)
1.0.0

Performs copy-assignment from source. Read more

impl Copy for OptionBool
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impl PartialEq for OptionBool
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fn eq(&self, other: &OptionBool) -> bool

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

fn ne(&self, other: &Rhs) -> bool
1.0.0

This method tests for !=.

impl<'a> PartialEq<OptionBool> for &'a OptionBool
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fn eq(&self, other: &OptionBool) -> bool

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

fn ne(&self, other: &Rhs) -> bool
1.0.0

This method tests for !=.

impl PartialOrd for OptionBool
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fn partial_cmp(&self, other: &OptionBool) -> Option<Ordering>

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

fn lt(&self, other: &Rhs) -> bool
1.0.0

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

fn le(&self, other: &Rhs) -> bool
1.0.0

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

fn gt(&self, other: &Rhs) -> bool
1.0.0

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

fn ge(&self, other: &Rhs) -> bool
1.0.0

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

impl Debug for OptionBool
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fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for OptionBool
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fn default() -> OptionBool

Returns the "default value" for a type. Read more

impl From<Option<bool>> for OptionBool
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fn from(o: Option<bool>) -> Self

Performs the conversion.