string_in_error.rs

#[deriving(Show)]
struct SampleError<'a> {
    message: &'a str
}

fn generate_err() -> Result<(), SampleError> {
    let m = format!("sample dynamic error: {}", 42);
    Err(SampleError { message: m.as_slice() })
}

fn main() {
    println!("{}", generate_err());
}

/*
string_in_error.rs:8:32: 8:33 error: `m` does not live long enough
string_in_error.rs:8     Err(SampleError { message: m.as_slice() })
                                                    ^
string_in_error.rs:6:46: 9:2 note: reference must be valid for the anonymous lifetime #1 defined on the block at 6:45...
string_in_error.rs:6 fn generate_err() -> Result<(), SampleError> {
string_in_error.rs:7     let m = format!("sample dynamic error: {}", 42);
string_in_error.rs:8     Err(SampleError { message: m.as_slice() })
string_in_error.rs:9 }
string_in_error.rs:6:46: 9:2 note: ...but borrowed value is only valid for the block at 6:45
string_in_error.rs:6 fn generate_err() -> Result<(), SampleError> {
string_in_error.rs:7     let m = format!("sample dynamic error: {}", 42);
string_in_error.rs:8     Err(SampleError { message: m.as_slice() })
string_in_error.rs:9 }
*/