pochita

A allocation arena for Rust.

Example

```rust use std::collections::HashMap;

use pochita::DroplessArena;

[derive(Default)]

struct SymbolTable { arena: DroplessArena, ids: HashMap<&'static str, usize>, strings: Vec<&'static str>, }

impl SymbolTable { fn intern(&mut self, string: &str) -> usize { if let Some(key) = self.ids.get(string) { return *key; }

    let key = self.strings.len();
    let string = self.arena.alloc_str(string);
    let string: &'static str = unsafe { std::mem::transmute(string) };

    self.ids.insert(string, key);
    self.strings.push(string);

    key
}

fn as_str(&self, id: usize) -> &str {
    self.strings[id]
}

}

fn main() { let mut table = SymbolTable::default();

assert_eq!(table.intern("fn"), table.intern("fn"));
assert_eq!(table.as_str(0), "fn");

} ```