Crate idc 

idc: A simple crate for error propagation

Idc is a simple crate for propagating errors that implement std’s Error trait.
Idc also supports no_std with the same functionality, but you have to provide a global allocator and disable default features.

examples:

1. propagating multiple different errors:

use std::fs;
use idc::*;
use serde_json::Value;

fn main() -> Result<()> {
    let foo = fs::read_to_string("foo.json").context("failed to read foo.", "maybe it doesn't exist?".into())?;
    let json: Value = serde_json::from_str(&foo).context("failed to turn foo into json.", "make sure foo.json is valid json.".into())?;
    println!("{}", json["important item"]);
    Ok(())
}

2. returning an one-time error:

use std::env;
use idc::*;

fn main() -> Result<()> {
    let args: Vec<String> = env::args().collect();
    if args.len() < 2 {
        bail!("no argument provided!");
    }
    //...
    Ok(())
}

Macros

bail

Macro for one time errors.

Structs

Error

An error type for errors that implement std’s Error trait.

Traits

Context

Trait for adding context and an optional hint to errors.

Type Aliases

Result

Shoter version of Result<T, idc::Error>.