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using match to capture the error

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Hariettemaina 2023-05-22 17:03:05 +03:00
parent d748cd156f
commit 938bf326df
1 changed files with 7 additions and 3 deletions
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10
exercises/error_handling/errors2.rs
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@ -17,16 +17,20 @@
// one is a lot shorter! // one is a lot shorter!
// Execute `rustlings hint errors2` or use the `hint` watch subcommand for a hint. // Execute `rustlings hint errors2` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
use std::num::ParseIntError; use std::num::ParseIntError;
pub fn total_cost(item_quantity: &str) -> Result<i32, ParseIntError> { pub fn total_cost(item_quantity: &str) -> Result<i32, ParseIntError> {
let processing_fee = 1; let processing_fee = 1;
let cost_per_item = 5; let cost_per_item = 5;
let qty = item_quantity.parse::<i32>();
Ok(qty * cost_per_item + processing_fee) match item_quantity.parse::<i32>(){
Ok(qty) => Ok(qty * cost_per_item + processing_fee),
Err(err)=> Err(err),
}
} }
#[cfg(test)] #[cfg(test)]