Struct EnvMsg 

pub struct EnvMsg {
    pub vars: HashMap<String, String>,
}

EnvMsg represents program environment variables.

Fields

vars: HashMap<String, String>

Environment variables map.

Implementations

impl EnvMsg

pub fn new(pairs: Vec<(String, String)>) -> Self

Creates a new EnvMsg from key-value pairs.

pub fn from_std() -> Self

Creates an EnvMsg from the process environment.

pub fn getenv(&self, key: &str) -> String

Returns value of environment variable or empty string if unset.

pub fn lookup_env(&self, key: &str) -> (String, bool)

Retrieves value and boolean presence flag.

Trait Implementations

impl Clone for EnvMsg

fn clone(&self) -> EnvMsg

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EnvMsg

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for EnvMsg

impl PartialEq for EnvMsg

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for EnvMsg