Enum CfgAtom
pub enum CfgAtom {
Flag(Symbol),
KeyValue {
key: Symbol,
value: Symbol,
},
}
Expand description
A simple configuration value passed in from the outside.
Variants§
Flag(Symbol)
eg. #[cfg(test)]
KeyValue
eg. #[cfg(target_os = "linux")]
Note that a key can have multiple values that are all considered “active” at the same time.
For example, #[cfg(target_feature = "sse")]
and #[cfg(target_feature = "sse2")]
.
Trait Implementations§
§impl Extend<CfgAtom> for CfgOptions
impl Extend<CfgAtom> for CfgOptions
§fn extend<T>(&mut self, iter: T)where
T: IntoIterator<Item = CfgAtom>,
fn extend<T>(&mut self, iter: T)where
T: IntoIterator<Item = CfgAtom>,
Extends a collection with the contents of an iterator. Read more
source§fn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
🔬This is a nightly-only experimental API. (
extend_one
)Extends a collection with exactly one element.
source§fn extend_reserve(&mut self, additional: usize)
fn extend_reserve(&mut self, additional: usize)
🔬This is a nightly-only experimental API. (
extend_one
)Reserves capacity in a collection for the given number of additional elements. Read more
§impl FromIterator<CfgAtom> for CfgOptions
impl FromIterator<CfgAtom> for CfgOptions
§fn from_iter<T>(iter: T) -> CfgOptionswhere
T: IntoIterator<Item = CfgAtom>,
fn from_iter<T>(iter: T) -> CfgOptionswhere
T: IntoIterator<Item = CfgAtom>,
Creates a value from an iterator. Read more
impl Eq for CfgAtom
impl StructuralPartialEq for CfgAtom
Auto Trait Implementations§
impl Freeze for CfgAtom
impl RefUnwindSafe for CfgAtom
impl Send for CfgAtom
impl Sync for CfgAtom
impl Unpin for CfgAtom
impl UnwindSafe for CfgAtom
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
§impl<T> Cast for T
impl<T> Cast for T
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Checks if this value is equivalent to the given key. Read more
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more