TODO.txt

   1 * Closures: Working on iterators
   2
   3 * Arrays/slices
   4 * Trait objects
   5
   6 * Arc, concurrency, channels: Some grep-like thing, "rgrep"
   7 * Send, Sync
   8 * External dependencies: regexp crate, add to rgrep
   9
  10 * Shared-memoty concurrency, interior mutability: Concurrent counter
  11 * Drop, unsafe: doubly-linked list