Trait ExportedVariableEnvironment 

pub trait ExportedVariableEnvironment: VariableEnvironment {
    // Required methods
    fn exported_var(&self, name: &Self::VarName) -> Option<(&Self::Var, bool)>;
    fn set_exported_var(
        &mut self,
        name: Self::VarName,
        val: Self::Var,
        exported: bool,
    );
}

An interface for setting and getting shell and environment variables and controlling whether or not they can appear as environment variables to subprocesses.

Required Methods

fn exported_var(&self, name: &Self::VarName) -> Option<(&Self::Var, bool)>

Get the value of some variable and whether it is exported.

fn set_exported_var( &mut self, name: Self::VarName, val: Self::Var, exported: bool, )

Set the value of some variable, and set it’s exported status as specified.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<'a, T: ?Sized + ExportedVariableEnvironment> ExportedVariableEnvironment for &'a mut T

fn exported_var(&self, name: &Self::VarName) -> Option<(&Self::Var, bool)>

fn set_exported_var( &mut self, name: Self::VarName, val: Self::Var, exported: bool, )

Implementors

impl<'a, E> ExportedVariableEnvironment for EnvRestorer<'a, E>

where E: ?Sized + VariableEnvironment + ExportedVariableEnvironment + UnsetVariableEnvironment + FileDescEnvironment, E::FileHandle: Clone, E::VarName: Clone, E::Var: Clone,

impl<A, FM, L, V, EX, WD, B, N, ERR> ExportedVariableEnvironment for Env<A, FM, L, V, EX, WD, B, N, ERR>

where V: ExportedVariableEnvironment, N: Hash + Eq,

impl<N, V> ExportedVariableEnvironment for VarEnv<N, V>

where N: Eq + Clone + Hash, V: Eq + Clone,