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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 Debug for VarError` [src]

`fn fmt(&self, __arg_0: &mut Formatter) -> Result` [src]

Formats the value using the given formatter. Read more

`impl PartialEq for VarError` [src]

`fn eq(&self, __arg_0: &VarError) -> bool` [src]

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

`fn ne(&self, __arg_0: &VarError) -> bool` [src]

This method tests for !=.

`impl Eq for VarError` [src]

`impl Clone for VarError` [src]

`fn clone(&self) -> VarError` [src]

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

`impl Display for VarError` [src]

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

Formats the value using the given formatter. Read more

`impl Error for VarError` [src]

`fn description(&self) -> &str` [src]

A short description of the error. Read more

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

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

© 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

Enum std::env::VarError

Variants

Trait Implementations

impl Debug for VarError [src]

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

impl PartialEq for VarError [src]

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

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

impl Eq for VarError [src]

impl Clone for VarError [src]

fn clone(&self) -> VarError [src]

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

impl Display for VarError [src]

fn fmt(&self, f: &mut Formatter) -> Result [src]

impl Error for VarError [src]

fn description(&self) -> &str [src]

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