Struct ConfigurationTree 

pub struct ConfigurationTree(/* private fields */);

A set of configuration fields, represented as a set of nested K=V mappings.

(This is a wrapper for an underlying type provided by the library that actually does our configuration.)

Implementations

impl ConfigurationTree

pub fn get_serde_value<T: DeserializeOwned>( &self, key: &str, ) -> Result<Option<T>, ConfigGetValueError>

Return the value with a given key as some type that implements Deserialize.

Return None if no such value is set in this tree.

pub fn merge_from<T>(&mut self, config: &T) -> Result<(), ConfigError>

where T: Serialize,

Override our current tree with the settings in config.

config must be implement Serialize, and must serialize to a map.

This operation follows the same as are used when reading multiple configuration files in sequence, where option settings in later files replace earlier ones.

Trait Implementations

impl Clone for ConfigurationTree

fn clone(&self) -> ConfigurationTree

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConfigurationTree

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

Formats the value using the given formatter.

impl Default for ConfigurationTree

fn default() -> ConfigurationTree

Returns the “default value” for a type.