Crate cannot find path

问题:

I am trying to use this crate to generate an ethereum address: https://docs.rs/ethkey/0.2.5/ethkey/

use ethkey::prelude::*;

fn main() {
    let key = EthAccount::load_or_generate("~/", "passwd")
        .expect("should load or generate new eth key");

    println!("{:?}", key.address())
}

This is the example from the documentation and it doesnt seem to work. I get the error below:

cargo run Compiling ethkey v0.1.0 (/Users/samueldare/Documents/Code/Thor/ethkey) Finished dev [unoptimized + debuginfo] target(s) in 1.34s Running target/debug/ethkey thread 'main' panicked at 'should load or generate new eth key: Error(IoError(Os { code: 2, kind: NotFound, message: "No such file or directory" }), State { next_error: None, backtrace: InternalBacktrace { backtrace: None } })', src/libcore/result.rs:999:5 note: run with RUST_BACKTRACE=1 environment variable to display a backtrace.

Ive use ~/ as a last attempt to generate the key file in rust, but it still doesnt seem to work.

I will appreciate any pointers with this

回答1:

The first argument to load_or_generate() takes a std::path::Path with no closing slash ( '/' ). Remove the slash:

fn main() {
    let key = EthAccount::load_or_generate("~", "passwd")
        .expect("should load or generate new eth key");

    println!("{:?}", key.address())
}

Sample output:

05:47 ethtest (master) ✗ cargo run
    Finished dev [unoptimized + debuginfo] target(s) in 0.04s
     Running `target/debug/ethtest`
Address(0x8248af6d1765e559509060b88e540a3567c42d20)
05:47 ethtest (master) ✗