Struct Sourced 

pub struct Sourced<T> {
    pub value: T,
    pub source: ConfigSource,
    pub env_var: Option<String>,
}

A configuration value with its source.

Fields

value: T

The actual value.

source: ConfigSource

Where this value came from.

env_var: Option<String>

Optional environment variable name if from environment.

Implementations

impl<T> Sourced<T>

pub fn new(value: T, source: ConfigSource) -> Self

Create a new sourced value.

pub fn from_env(value: T, var_name: impl Into<String>) -> Self

Create a sourced value from an environment variable.

pub fn default_value(value: T) -> Self

Create a default sourced value.

pub fn map<U>(self, f: impl FnOnce(T) -> U) -> Sourced<U>

Map the value while preserving source.

pub fn merge(self, other: Self) -> Self

Merge with another sourced value, taking the higher precedence one.

Trait Implementations

impl<T: Clone> Clone for Sourced<T>

fn clone(&self) -> Sourced<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Sourced<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for Sourced<T>

fn default() -> Self

Returns the “default value” for a type.