Tracking Issue for Option::get_or_insert_default · Issue #82901 · rust-lang/rust

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Description

Feature gate: #![feature(option_get_or_insert_default)]

This is a tracking issue for adding Option::get_or_insert_default.

Basically, it is a shorthand for option.get_or_insert_with(Default::default). It differs with unwrap_or_default since it does not consume the Option. This is useful, for example, when you have an Option as a struct field or inside a data structure like Vec<Option<T>>.

Public API

impl<T> Option<T> {
    pub fn get_or_insert_default(&mut self) -> &mut T where T: Default;
}

Steps / History

• Original issue: Option should have method get_or_default #55042
• Implementation: Add Option::get_or_default #82849
• Renamed from get_or_default to get_or_insert_default: Rename Option::get_or_default to get_or_insert_default #82977
• Final commenting period (FCP)
• Stabilization PR

Unresolved Questions

• None yet.