Enable move-only handlers.

All async operations and executor operations support move-only
handlers. However, the io_service::post(), io_service::dispatch(),
io_service::strand::post() and io_service::strand::dispatch() functions
still require copyable handlers.
15 files changed
tree: baefa281439ccbbe146909555da88b1b9acd15a9
  1. asio/
  2. .gitignore