Struct CompositeConfigSource 

pub struct CompositeConfigSource { /* private fields */ }

Configuration source that merges multiple sources in order

Implementations

impl CompositeConfigSource

pub fn new() -> Self

Creates a new empty CompositeConfigSource.

Returns

An empty composite with no inner sources.

pub fn add<S: ConfigSource + 'static>(&mut self, source: S) -> &mut Self

Adds a configuration source

Sources are applied in the order they are added. Later sources override earlier sources for the same key.

Parameters

• source - The configuration source to add

Returns

self for method chaining.

pub fn len(&self) -> usize

Returns the number of sources in this composite.

Returns

The length of the internal source list.

pub fn is_empty(&self) -> bool

Returns true if this composite has no sources.

Returns

true when Self::len is zero.

Trait Implementations

impl ConfigSource for CompositeConfigSource

fn load(&self, config: &mut Config) -> ConfigResult<()>

Loads configuration data into the provided Config object

impl Default for CompositeConfigSource

fn default() -> Self

Returns the “default value” for a type.