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EnvBackend

random_image_server::env

Trait EnvBackend 

Source 
pub trait EnvBackend {
    // Required methods
    fn var(&self, var: &str) -> Result<String, VarError>;
    fn set_var(&mut self, var: &str, value: &str);
    fn remove(&mut self, var: &str);
}

Required Methods§

Source

fn var(&self, var: &str) -> Result<String, VarError>

Read an environment variable

§Errors

Returns an error if the variable is not set

Source

fn set_var(&mut self, var: &str, value: &str)

Set an environment variable

Source

fn remove(&mut self, var: &str)

Remove an environment variable

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§