1.0.0[][src]Enum std::env::VarError

pub enum VarError {
    NotPresent,
    NotUnicode(OsString),
}

The error type for operations interacting with environment variables. Possibly returned from the env::var function.

Variants

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.

Trait Implementations

impl Error for VarError[src]

fn cause(&self) -> Option<&dyn Error>[src]

Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

The lower-level cause of this error, if any. Read more

fn source(&self) -> Option<&(dyn Error + 'static)>1.30.0[src]

The lower-level source of this error, if any. Read more

impl Display for VarError[src]

impl Debug for VarError[src]

impl PartialEq<VarError> for VarError[src]

impl Eq for VarError[src]

impl Clone for VarError[src]

fn clone_from(&mut self, source: &Self)[src]

Performs copy-assignment from source. Read more

Auto Trait Implementations

impl UnwindSafe for VarError

impl RefUnwindSafe for VarError

impl Unpin for VarError

impl Sync for VarError

impl Send for VarError

Blanket Implementations

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> From<T> for T[src]

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T> ToString for T where
    T: Display + ?Sized
[src]