Trait mod_utilities::AllowIf

pub trait AllowIf: Sized {
    type Accepted;
    fn allow_if<F: FnOnce(&Self::Accepted) -> bool>(
        self, 
        f: F
    ) -> Option<Self::Accepted>;
    fn allow_if_mut<F: FnOnce(&mut Self::Accepted) -> bool>(
        self, 
        f: F
    ) -> Option<Self::Accepted>;

    fn allow_if_not<F: FnOnce(&Self::Accepted) -> bool>(
        self, 
        f: F
    ) -> Option<Self::Accepted> { ... }
    fn allow_if_not_mut<F: FnOnce(&mut Self::Accepted) -> bool>(
        self, 
        f: F
    ) -> Option<Self::Accepted> { ... }
}

A trait that allows discarding Option values if some condition is or is not met

Associated Types

type Accepted

The type of value given by AllowIf calls

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Required methods

fn allow_if<F: FnOnce(&Self::Accepted) -> bool>(
    self,
    f: F
) -> Option<Self::Accepted>

Discard Option value if some condition is not met

fn allow_if_mut<F: FnOnce(&mut Self::Accepted) -> bool>(
    self,
    f: F
) -> Option<Self::Accepted>

Discard Option value if some condition is not met

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Provided methods

fn allow_if_not<F: FnOnce(&Self::Accepted) -> bool>(
    self,
    f: F
) -> Option<Self::Accepted>

Discard Option value if some condition is met

fn allow_if_not_mut<F: FnOnce(&mut Self::Accepted) -> bool>(
    self,
    f: F
) -> Option<Self::Accepted>

Discard Option value if some condition is met

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Implementations on Foreign Types

impl<T> AllowIf for Option<T>

type Accepted = T

fn allow_if<F: FnOnce(&Self::Accepted) -> bool>(self, f: F) -> Option<T>

fn allow_if_mut<F: FnOnce(&mut Self::Accepted) -> bool>(self, f: F) -> Option<T>

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Implementors

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