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https://github.com/ahgamut/rust-ape-example.git
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36 lines
801 B
Rust
36 lines
801 B
Rust
// ./src/error/result.md
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fn multiply(first_number_str: &str, second_number_str: &str) -> i32 {
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// Let's try using `unwrap()` to get the number out. Will it bite us?
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let first_number = first_number_str.parse::<i32>().unwrap();
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let second_number = second_number_str.parse::<i32>().unwrap();
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first_number * second_number
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}
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fn part0() {
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let twenty = multiply("10", "2");
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println!("double is {}", twenty);
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let tt = multiply("t", "2");
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println!("double is {}", tt);
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}
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use std::num::ParseIntError;
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fn part1() -> Result<(), ParseIntError> {
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let number_str = "10";
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let number = match number_str.parse::<i32>() {
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Ok(number) => number,
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Err(e) => return Err(e),
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};
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println!("{}", number);
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Ok(())
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}
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pub fn main() {
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part0();
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part1();
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}
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