[−][src]Crate io_result_optional
Provides a trait for std::io::Result
that adds a method making
it easy to tell the difference between a file not found and
another error, since a common practice is to handle a file if it
exists.
Examples
use io_result_optional::IoResultOptional; use std::fs::File; let config = File::open(".app.rc") .optional()? .map(readconfig) .unwrap_or_default();
use io_result_optional::IoResultOptional; use std::fs::File; if let Some(input) = File::open("data").optional()? { // The data exists, so handle it ... // If it doesn't exist, it is just ignored // If there is another error, this function returns it. }
Traits
IoResultOptional | A trait for |