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// // This Source Code Form is subject to the terms of the Mozilla Public // License, v. 2.0. If a copy of the MPL was not distributed with this // file, You can obtain one at http://mozilla.org/MPL/2.0/. // //! resiter //! //! This crate helps iterating over `Iterator<Item = Result<O, E>>`. //! All these things are trivial to build yourself, but why invest the effort if you can use a //! crate for this? //! //! # Contributions welcome //! //! If you have _anything_ that might fit the scope of this crate, don't hesitate opening a //! pull-request for it! This is considered a toolkit and convenience-crate, so everything which //! might fit its scope should be merged! //! //! # Dependencies and Feature-gates //! //! If a feature of this crate uses external dependencies, it should be hidden behind a feature //! gate. The crate itself should be usable without any dependencies besides `std`! //! //! # Features //! //! Features included in this crate: //! //! * Unwrap `Result<O, E>`s inside an Iterator //! * Select only `Err(_)`s from the Iterator //! * Select only `Ok(_)`s from the Iterator //! * Do something in the `Err(_)` case, but don't change the error-object //! * Do something in the `Ok(_)` case, but don't change the ok-object //! //! # Usecase //! //! * Consuming iterators until an error occurs //! //! ``` //! # fn main() { //! use std::str::FromStr; //! use resiter::errors::*; //! //! let _ : Option<::std::num::ParseIntError> = ["1", "2", "foo", "4", "5"] //! .into_iter() //! .map(|e| usize::from_str(e)) //! .errors() //! .next(); // "4" and "5" will never be processed by the iterator //! # } //! ``` //! //! * Consuming iterators and collect all errors //! //! ``` //! # fn main() { //! use std::str::FromStr; //! use resiter::errors::*; //! //! let len = ["1", "2", "foo", "4", "5"] //! .into_iter() //! .map(|e| usize::from_str(e)) //! .errors() //! .collect::<Vec<::std::num::ParseIntError>>() //! .len(); //! assert_eq!(len, 1); //! # } //! ``` //! //! * Consuming iterators and collect all oks //! //! ``` //! # fn main() { //! use std::str::FromStr; //! use resiter::oks::*; //! //! let len = ["1", "2", "foo", "4", "5"] //! .into_iter() //! .map(|e| usize::from_str(e)) //! .oks() // Could also be done with .filter_map(Result::ok) //! .collect::<Vec<_>>() //! .len(); //! assert_eq!(len, 4); //! # } //! ``` //! //! * Printing errors / oks //! //! ``` //! # fn main() { //! use std::str::FromStr; //! use resiter::oks::*; //! use resiter::onerr::*; //! use resiter::onok::*; //! //! let len = ["1", "2", "foo", "4", "5"] //! .into_iter() //! .map(|e| usize::from_str(e)) //! .on_err(|e| println!("Error happened: {:?}", e)) // ::std::process::exit(1) possible //! .on_ok(|o| println!("Parsed : '{}'", o)) //! .oks() //! .collect::<Vec<_>>() //! .len(); //! assert_eq!(len, 4); //! # } //! ``` //! //! # License //! //! MPL 2.0 //! pub mod errors; pub mod oks; pub mod onerr; pub mod onok; pub mod prelude; pub mod unwrap; mod util;