rustlang try from
use std::convert::TryFrom;
struct GreaterThanZero(i32);
impl TryFrom<i32> for GreaterThanZero {
type Error = &'static str;
fn try_from(value: i32) -> Result<Self, Self::Error> {
if value <= 0 {
Err("GreaterThanZero only accepts value superior than zero!")
} else {
Ok(GreaterThanZero(value))
}
}
}try and catch in rust
fn main() {
let do_steps = || -> Result<(), MyError> {
do_step_1()?;
do_step_2()?;
do_step_3()?;
Ok(())
};
if let Err(_err) = do_steps() {
println!("Failed to perform necessary steps");
}
}Copyright © 2021 Codeinu
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