Enum std::env::VarError

[+] Show type declaration

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

[−] Expand description

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

Variants

NotPresent

[−] Expand description

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

NotUnicode(OsString)

[−] Expand description

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 Debug for VarError

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fn fmt(&self, __arg_0: &mut Formatter) -> Result

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Formats the value using the given formatter.

impl PartialEq for VarError

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fn eq(&self, __arg_0: &VarError) -> bool

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

fn ne(&self, __arg_0: &VarError) -> bool

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This method tests for !=.

impl Eq for VarError

impl Clone for VarError

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fn clone(&self) -> VarError

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Returns a copy of the value.

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

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Performs copy-assignment from source.

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.

impl Error for VarError

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fn description(&self) -> &str

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A short description of the error.

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

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