Tracking Issue for result_option_inspect · Issue #91345 · rust-lang/rust

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Description

Feature gate: #![feature(result_option_inspect)]

This is a tracking issue for Option::inspect and Result::{inspect, inspect_err}.

Public API

// core::result

impl Result<T, E> {
    pub fn inspect<F: FnOnce(&T)>(self, f: F) -> Self;
    pub fn inspect_err<F: FnOnce(&E)>(self, f: F) -> Self;
}

// core::option

impl Option<T> {
    pub fn inspect<F: FnOnce(&T)>(self, f: F) -> Self;
}

Steps / History

• Implementation: Add Option::inspect and Result::{inspect, inspect_err} #91346
• Final comment period (FCP)
• Stabilization PR

Unresolved Questions

• Should there be a more general Tap trait in std?