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| -rw-r--r-- | src/doc/trpl/error-handling.md | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/doc/trpl/error-handling.md b/src/doc/trpl/error-handling.md index 68671cef707..52a4e7324ee 100644 --- a/src/doc/trpl/error-handling.md +++ b/src/doc/trpl/error-handling.md @@ -1838,6 +1838,22 @@ impl<'a, 'b> From<&'b str> for Box<Error + Send + Sync + 'a> impl From<String> for Box<Error + Send + Sync> ``` +Since `search` now returns a `Result<T, E>`, `main` should use case analysis +when calling `search`: + +```rust,ignore +... +match search(&data_file, &city) { + Ok(pops) => { + for pop in pops { + println!("{}, {}: {:?}", pop.city, pop.country, pop.count); + } + } + Err(err) => println!("{}", err) +} +... +``` + Now that we've seen how to do proper error handling with `Box<Error>`, let's try a different approach with our own custom error type. But first, let's take a quick break from error handling and add support for reading from `stdin`. |