darling_core 0.23.0

Helper crate for proc-macro library for reading attributes into structs when implementing custom derives. Use https://crates.io/crates/darling in your code.
Documentation 
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use std::collections::HashSet;

use syn::Ident;

/// A set of idents.
pub type IdentSet = HashSet<Ident>;

/// A set of references to idents.
pub type IdentRefSet<'a> = HashSet<&'a Ident>;