Enum clap::ValueSource
source · [−]#[non_exhaustive]
pub enum ValueSource {
DefaultValue,
EnvVariable,
CommandLine,
}
Expand description
Origin of the argument’s value
Variants (Non-exhaustive)
This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
DefaultValue
Value came Arg::default_value
EnvVariable
Value came [Arg::env
][crate::Arg::env]
CommandLine
Value was passed in on the command-line
Trait Implementations
sourceimpl Clone for ValueSource
impl Clone for ValueSource
sourcefn clone(&self) -> ValueSource
fn clone(&self) -> ValueSource
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for ValueSource
impl Debug for ValueSource
sourceimpl Ord for ValueSource
impl Ord for ValueSource
sourceimpl PartialEq<ValueSource> for ValueSource
impl PartialEq<ValueSource> for ValueSource
sourceimpl PartialOrd<ValueSource> for ValueSource
impl PartialOrd<ValueSource> for ValueSource
sourcefn partial_cmp(&self, other: &ValueSource) -> Option<Ordering>
fn partial_cmp(&self, other: &ValueSource) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl Copy for ValueSource
impl Eq for ValueSource
impl StructuralEq for ValueSource
impl StructuralPartialEq for ValueSource
Auto Trait Implementations
impl RefUnwindSafe for ValueSource
impl Send for ValueSource
impl Sync for ValueSource
impl Unpin for ValueSource
impl UnwindSafe for ValueSource
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
sourcefn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to key
and return true
if they are equal.
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
🔬 This is a nightly-only experimental API. (
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more