Crate parse_result [−] [src]
Add parse
to Result
The core purpose of this library is to give better ergonomics to parsing from
sources which could fail, e.g. reading stdin
.
extern crate parse_result; use parse_result::*; use std::env; fn main() { // It turns code like this: env::var("PORT").map(|s| s.parse().unwrap_or(3000)).unwrap_or(3000); // Into this: env::var("PORT").parse().unwrap_or(3000); // Matching to find the specific failure match env::var("PORT").parse::<u32>() { Ok(port) => println!("Parsed port {} successfully!", port), Err(OriginalErr(e)) => panic!("Failed to get PORT from env: {}", e), Err(ParseFailure(e)) => panic!("Failed to parse PORT: {}", e), } }
Reexports
pub use Error::*; |
Enums
Error |
Represents the possible errors from calling |
Traits
ParseResult |
Extension trait to add |