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OptionEq

gstreamer::prelude

Trait OptionEq 

pub trait OptionEq<Rhs, InnerRhs = Rhs> {
    // Required method
    fn opt_eq(&self, other: Rhs) -> Option<bool>;

    // Provided method
    fn opt_ne(&self, other: Rhs) -> Option<bool> { ... }
}
Expand description

Trait for the equality OptionOperations.

Required Methods§

fn opt_eq(&self, other: Rhs) -> Option<bool>

Tests whether self is equal to other.

Returns None if they can’t be compared, e.g. if at most one argument is None.

Provided Methods§

fn opt_ne(&self, other: Rhs) -> Option<bool>

Tests whether self is not equal to other.

Returns None if they can’t be compared, e.g. if at most one argument is None.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types§

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impl<T, InnerRhs> OptionEq<&Option<InnerRhs>, InnerRhs> for Option<T>
where T: OptionOperations + for<'a> OptionEq<&'a InnerRhs, InnerRhs>,

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fn opt_eq(&self, rhs: &Option<InnerRhs>) -> Option<bool>

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impl<T, InnerRhs> OptionEq<Option<InnerRhs>, InnerRhs> for Option<T>
where T: OptionOperations + for<'a> OptionEq<&'a InnerRhs, InnerRhs>,

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fn opt_eq(&self, rhs: Option<InnerRhs>) -> Option<bool>

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impl<T, Rhs> OptionEq<&Rhs, Rhs> for Option<T>
where T: OptionOperations + for<'a> OptionEq<&'a Rhs, Rhs>,

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fn opt_eq(&self, rhs: &Rhs) -> Option<bool>

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impl<T, Rhs> OptionEq<Rhs> for Option<T>
where T: OptionOperations + for<'a> OptionEq<&'a Rhs, Rhs>,

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fn opt_eq(&self, rhs: Rhs) -> Option<bool>

Implementors§

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impl<T, InnerRhs> OptionEq<&Option<InnerRhs>, InnerRhs> for T
where T: OptionOperations + for<'a> OptionEq<&'a InnerRhs, InnerRhs>,

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impl<T, InnerRhs> OptionEq<Option<InnerRhs>, InnerRhs> for T
where T: OptionOperations + for<'a> OptionEq<&'a InnerRhs, InnerRhs>,

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impl<T, Rhs> OptionEq<&Rhs, Rhs> for T
where T: OptionOperations + PartialEq<Rhs>,

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impl<T, Rhs> OptionEq<Rhs> for T
where T: OptionOperations + for<'a> OptionEq<&'a Rhs, Rhs>,