Feature gate: #![feature(is_ascii_octdigit)]

This is a tracking issue for two new methods char::is_ascii_octdigit and u8::is_ascii_octdigit, which, in the same vein as is_ascii_hexdigit, checks if a value is an ASCII octal digit ('0'..='7').

This is a shorthand for {char, u8}::is_digit(self, 8). Prior discussion on irlo.

Public API

// core::char

impl char {
    pub fn is_ascii_octdigit(self) -> bool;
}

// core::num

impl u8 {
    pub fn is_ascii_octdigit(self) -> bool;
}

Steps / History

• Implementation: introduce {char, u8}::is_ascii_octdigit #101308
• Final comment period (FCP)¹
• Stabilization PR

Unresolved Questions

• None yet.