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//! Collectors will provide abstractions for different collectors.
//!
//! Every collectors implements
//!
//! ```ignore
//! pub trait Collector<V: DeserializeOwned + Serialize> {
//! fn collect(&mut self) -> Result<Value>;
//! }
//! ```
//!
//! We are supports the following collectors:
//!
//! - [`from_env`]: Load from current environment.
//! - [`from_file`]: Load from file with specific format like toml.
//! - [`from_reader`]: Load from [`std::io::Read`] with specific format like toml.
//! - [`from_str`]: Load from string with specific format like toml.
//! - [`from_self`]: Load the config value itself.
//!
//! Collectors often been used by [`Builder`][`crate::Builder`]:
//!
//! For Examples:
//!
//! ```
//! use serde::{Deserialize, Serialize};
//! use serfig::collectors::{from_env, from_file, from_self};
//! use serfig::parsers::Toml;
//! use serfig::Builder;
//!
//! #[derive(Debug, Serialize, Deserialize, PartialEq, Default)]
//! #[serde(default)]
//! struct TestConfig {
//! a: String,
//! b: String,
//! c: i64,
//! }
//!
//! fn main() -> anyhow::Result<()> {
//! let builder = Builder::default()
//! .collect(from_env())
//! .collect(from_self(TestConfig::default()));
//! let t: TestConfig = builder.build()?;
//!
//! println!("{:?}", t);
//! Ok(())
//! }
//! ```
pub use ;
pub use from_env;
pub use ;
pub use from_self;