pub enum VarError {
NotPresent,
NotUnicode(OsString),
}
The error type for operations interacting with environment variables. Possibly returned from the env::var function.
NotPresent
The specified environment variable was not present in the current process's environment.
NotUnicode(OsString)
The specified environment variable was found, but it did not contain valid unicode data. The found data is returned as a payload of this variant.
impl Clone for VarError[src]
impl Debug for VarError[src]
impl Display for VarError[src]
impl Eq for VarError[src]
impl Error for VarError[src]
fn description(&self) -> &str[src]
fn source(&self) -> Option<&(dyn Error + 'static)>[src]1.30.0
fn backtrace(&self) -> Option<&Backtrace>[src]
fn cause(&self) -> Option<&dyn Error>[src]
impl PartialEq<VarError> for VarError[src]
impl StructuralEq for VarError[src]
impl StructuralPartialEq for VarError[src]
impl RefUnwindSafe for VarErrorimpl Send for VarErrorimpl Sync for VarErrorimpl Unpin for VarErrorimpl UnwindSafe for VarErrorimpl<T> Any for T where
    T: 'static + ?Sized, [src]
impl<T> Borrow<T> for T where
    T: ?Sized, [src]
fn borrow(&self) -> &TⓘNotable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
    F: Unpin + Future + ?Sized,Â
type Output = <F as Future>::Output;
impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized,Â
type Item = <I as Iterator>::Item;
impl<R:Â Read + ?Sized, '_> Read for &'_ mut R
impl<W:Â Write + ?Sized, '_> Write for &'_ mut W
[src]
impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]
fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
    F: Unpin + Future + ?Sized,Â
type Output = <F as Future>::Output;
impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized,Â
type Item = <I as Iterator>::Item;
impl<R:Â Read + ?Sized, '_> Read for &'_ mut R
impl<W:Â Write + ?Sized, '_> Write for &'_ mut W
[src]
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
    U: From<T>, [src]
impl<T> ToOwned for T where
    T: Clone, [src]
type Owned = TThe resulting type after obtaining ownership.
fn to_owned(&self) -> T[src]
fn clone_into(&self, target: &mut T)[src]
impl<T> ToString for T where
    T: Display + ?Sized, [src]
impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]
type Error = InfallibleThe type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/env/enum.VarError.html