Struct Config 

pub struct Config { /* private fields */ }

Key-value configuration container.

Implementations

impl Config

pub fn new() -> Config

Creates an empty configuration.

pub fn set(&mut self, key: &str, value: &str)

Sets the value associated with key.

pub fn get(&self, key: &str) -> Option<&str>

Returns the value associated with key, or None.

pub fn get_or(&self, key: &str, default: &str) -> String

Returns the value for key, or default if absent.

pub fn get_f64(&self, key: &str) -> Option<f64>

Parses the value as f64, or None if absent or invalid.

pub fn get_usize(&self, key: &str) -> Option<usize>

Parses the value as usize, or None if absent or invalid.

pub fn get_bool(&self, key: &str) -> Option<bool>

Parses the value as bool, or None if absent or invalid.

pub fn keys(&self) -> impl Iterator<Item = &str>

Iterates over all keys in the configuration.

pub fn len(&self) -> usize

Number of entries in the configuration.

pub fn is_empty(&self) -> bool

Returns true if the configuration is empty.

pub fn merge(&mut self, other: &Config)

Merges entries from other into this configuration.

pub fn from_env_prefix(prefix: &str) -> Config

Builds a configuration from environment variables starting with prefix.

Trait Implementations

impl Clone for Config

fn clone(&self) -> Config

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Config

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

Formats the value using the given formatter.

impl Default for Config

fn default() -> Config

Returns the “default value” for a type.