Struct build_data::OnceI64 [−][src]
pub struct OnceI64 { /* fields omitted */ }
Caches an i64.
Implementations
impl OnceI64
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#[must_use]pub const fn new() -> Self
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#[must_use]
pub const fn new() -> SelfMakes a new empty struct.
pub fn get(
&self,
f: impl FnOnce() -> Result<i64, String>
) -> Result<i64, String>
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&self,
f: impl FnOnce() -> Result<i64, String>
) -> Result<i64, String>
Gets the value if it was already created, otherwise calls f
to create it.
Thread-safe.
Errors
Returns any error returned by f
.
Auto Trait Implementations
impl RefUnwindSafe for OnceI64
impl Send for OnceI64
impl Sync for OnceI64
impl Unpin for OnceI64
impl UnwindSafe for OnceI64
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,