cfg-rs provides a layered configuration formed by multi config source for rust applications.
Former crate salak.rs.
This lib supports:
* Easy to use, one line to create, [Configuration::init].
* Mutiple sources, such as environment variables, toml, yaml and json.
* Easily extends config source by implementing [crate::source::file::FileConfigSource].
* Programmatic override config by [ConfigurationBuilder::set].
* Auto derive config struct by proc-macro.
* Placeholder parsing with syntax ${config.key}.
* Using placeholder expresion to get random value by ${random.u64}, support all integer types.
See the examples for general usage information.