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

    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

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`impl Debug for VarError`

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`fn fmt(&self, f: &mut Formatter) -> Result`

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Formats the value using the given formatter. Read more

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`impl PartialEq for VarError`

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`fn eq(&self, other: &VarError) -> bool`

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This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

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`fn ne(&self, other: &VarError) -> bool`

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This method tests for `!=`.

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`impl Eq for VarError`

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`impl Clone for VarError`

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`fn clone(&self) -> VarError`

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Returns a copy of the value. Read more

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`fn clone_from(&mut self, source: &Self)`

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Performs copy-assignment from `source`. Read more

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`impl Display for VarError`

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`fn fmt(&self, f: &mut Formatter) -> Result`

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Formats the value using the given formatter. Read more

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`impl Error for VarError`

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`fn description(&self) -> &str`

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This method is soft-deprecated. Read more

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`fn cause(&self) -> Option<&Error>`

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

## Auto Trait Implementations

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`impl Send for VarError`

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`impl Sync for VarError`

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