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

The specified environment variable was not present in the current process's environment.

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
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This method is soft-deprecated. Read more

Deprecating in 1.33.0

: replaced by Error::source, which can support downcasting

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

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

impl Display for VarError
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Formats the value using the given formatter. Read more

impl Debug for VarError
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Formats the value using the given formatter. Read more

impl PartialEq<VarError> for VarError
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This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

impl Eq for VarError
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impl Clone for VarError
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Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Auto Trait Implementations

impl Send for VarError

impl Sync for VarError

Blanket Implementations

impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl<T> From for T
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Performs the conversion.

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl<T, U> Into for T where
    U: From<T>, 
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Performs the conversion.

impl<T> Borrow for T where
    T: ?Sized
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Important traits for &'_ mut I

Immutably borrows from an owned value. Read more

impl<T> BorrowMut for T where
    T: ?Sized
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Important traits for &'_ mut I

Mutably borrows from an owned value. Read more

impl<T> Any for T where
    T: 'static + ?Sized
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🔬 This is a nightly-only experimental API. (get_type_id #27745)

this method will likely be replaced by an associated static

Gets the TypeId of self. Read more

impl<T> ToOwned for T where
    T: Clone
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Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> ToString for T where
    T: Display + ?Sized
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Converts the given value to a String. Read more