Struct xscript::Vars

pub struct Vars<S: CmdString = OsString>(/* private fields */);

A set of environment variables.

Implementations

impl<S: CmdString> Vars<S>

pub fn new() -> Self

Constructs an empty set of environment variables.

pub fn is_clean(&self) -> bool

Indicates that all other environment variables shall be discarded.

pub fn values(&self) -> impl Iterator<Item = (&S::Str, Option<&S::Str>)>

The values of the environment variables.

pub fn set<N: AsRef<S::Str>, V: AsRef<S::Str>>( &mut self, name: N, value: V ) -> &mut Self

Sets the value of an environment variable.

pub fn unset<N: AsRef<S::Str>>(&mut self, name: N) -> &mut Self

Discards the value of an environment variable.

pub fn inherit<N: AsRef<S::Str>>( &mut self, name: N ) -> Result<&mut Self, VarError>

Inherits the environment variable from the parent process.

pub fn reset<N: AsRef<S::Str>>(&mut self, name: N) -> &mut Self

Resets a variable.

Trait Implementations

impl<S: Clone + CmdString> Clone for Vars<S>

fn clone(&self) -> Vars<S>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<S: Debug + CmdString> Debug for Vars<S>

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

Formats the value using the given formatter.

impl<S: Default + CmdString> Default for Vars<S>

fn default() -> Vars<S>

Returns the “default value” for a type.

impl<'de, S> Deserialize<'de> for Vars<S>

where S: Deserialize<'de> + CmdString,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<S> Serialize for Vars<S>

where S: Serialize + CmdString,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.