bit_roles 0.2.2

Granular role management based on bit flags
Documentation 
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use thiserror::Error;

/// The error raised when working with role values.
#[derive(Error, Debug)]
pub enum RoleError {
    /// Raised when the provided role holds a value that is neither zero nor a
    /// power of two.
    #[error("invalid role value: `{0}` is neither zero nor a power of two")]
    InvalidRole(usize),
}