Enum rustc::ty::ClosureKind[][src]

pub enum ClosureKind {
    Fn,
    FnMut,
    FnOnce,
}
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Represents the various closure traits in the Rust language. This will determine the type of the environment (self, in the desuaring) argument that the closure expects.

You can get the environment type of a closure using tcx.closure_env_ty().

Variants

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Methods

impl<'a, 'tcx> ClosureKind
[src]

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LATTICE_BOTTOM: ClosureKind = ClosureKind::Fn

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True if this a type that impls this closure kind must also implement other.

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Returns the representative scalar type for this closure kind. See TyS::to_opt_closure_kind for more details.

Trait Implementations

impl<'a, 'tcx> HashStable<StableHashingContext<'a>> for ClosureKind
[src]

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impl<'tcx> TypeFoldable<'tcx> for ClosureKind
[src]

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True if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free. Read more

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True if this self has any regions that escape binder (and hence are not bound by it). Read more

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound. Read more

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True if there any any un-erased free regions.

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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching. Read more

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True if there are any late-bound regions

impl<'tcx> Lift<'tcx> for ClosureKind
[src]

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impl Clone for ClosureKind
[src]

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl Copy for ClosureKind
[src]

impl PartialOrd for ClosureKind
[src]

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

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

impl Ord for ClosureKind
[src]

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

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

impl PartialEq for ClosureKind
[src]

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

This method tests for !=.

impl Eq for ClosureKind
[src]

impl Hash for ClosureKind
[src]

Feeds this value into the given [Hasher]. Read more

Feeds a slice of this type into the given [Hasher]. Read more

impl Debug for ClosureKind
[src]

Formats the value using the given formatter. Read more

impl Encodable for ClosureKind
[src]

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impl Decodable for ClosureKind
[src]

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impl Print for ClosureKind
[src]

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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impl Display for ClosureKind
[src]

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl Send for ClosureKind

impl Sync for ClosureKind