# Ergonomy ideas

- Implemented:
  - `Default` for infallible convenience construction.
  - `fill_bytes(&mut [u8])` convenience so callers don't need to import
    `io::Read`.
  - `gen_range_<int>` for all primitive integer widths.
  - `gen_range_<int>_in` for standard `RangeBounds` forms, including `Range`
    and `RangeInclusive`.
  - `choose<T>(&[T]) -> &T` for generic slice selection.
  - `Clone` plus fallible `try_clone()` so multiple call sites can own separate
    handles without adding interior mutability.
  - Presets for direct alphabet names: `OsRandom::token(len)`, `::hex(len)`,
    and `::pin(len)`.

- Deferred to keep the crate small:
  - `thread_local` global helpers like `ez_urandom::random_u64()` without
    constructing or threading an `OsRandom`.
  - `shuffle(&mut [T])`; `choose` covers the smaller selection use case without
    growing into collection algorithms.
  - `OsRandom::password(len)`; password generation needs policy decisions about
    symbols, ambiguous characters, and service-specific constraints.

- Still open for later consideration:
- `bool()` / `f64()` (unit interval) helpers.
- Accept a `&str` alphabet directly (not just `&[u8]`) and drop the ASCII
  assert by iterating `chars()`.