Struct UniqueNameGenerator 

pub struct UniqueNameGenerator {
    pub existing_names: HashSet<String>,
    /* private fields */
}

Generates names that are based on a prefix and avoids collisions with names already taken.

Fields

existing_names: HashSet<String>

Names that are already taken i.e. would never be generated again.

Implementations

impl UniqueNameGenerator

pub fn is_name_conflicting<T: ToString>(&self, name: T) -> bool

Returns true only if name is present in UniqueNameGenerator::existing_names.

pub fn add_name<T: ToString>(&mut self, name: T)

Records name into the set of existing names.

pub fn add_names<I: ToString, T: IntoIterator<Item = I>>(&mut self, names: T)

Calls UniqueNameGenerator::add_name on each name in names.

pub fn get<T: ToString>(&mut self, based_on: T) -> String

Returns a name prefixed with based_on that is not present in [’UniqueNameGenerator::existing_names`].

Examples found in repository

examples/ex_name_gen.rs (line 5)

fn main() {
    let mut vng = make_unique_name_gen([]);
    println!("vng.get(foo) => {}", vng.get("foo"));
    println!("vng.get(foo) => {}", vng.get("foo"));
    println!("vng.get(bar_2) => {}", vng.get("bar_2"));
    println!("vng.get(bar_2) => {}", vng.get("bar_2"));
    println!("vng.get(bar_2) => {}", vng.get("bar_2"));
}