Backporting `inspect_err` to 1.70

help
1

I am trying to support my crate to rust version 1.70 (a popular RTOS has just added support of rust but version 1.70.0 only).

I have been using inspect_err and other goodies available in 1.76 quite liberally. I was wondering if there is a easy pollyfill/crate that allows me to keep using inspect_err with 1.70?

2

You can use tap crate. :slight_smile:

For example:

use tap::TapFallible;

fn frobnicate() -> Result<(), &'static str> { todo!() }

fn main() {
    let _ = frobnicate().tap_err(|e| println!("failed to frobnicate: {e}"));
}
3 Likes
3

If you just want this one method, you can write a trait with such extension yourself.

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4

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