Errno
module Errno
Ruby exception objects are subclasses of Exception
. However, operating systems typically report errors using plain integers. Module Errno
is created dynamically to map these operating system errors to Ruby classes, with each error number generating its own subclass of SystemCallError
- As the subclass is created in module Errno
, its name will start Errno::
-
The names of the Errno::
classes depend on the environment in which Ruby runs- On a typical Unix or Windows platform, there are Errno
classes such as Errno::EACCES
, Errno::EAGAIN
, Errno::EINTR
, and so on-
The integer operating system error number corresponding to a particular error is available as the class constant Errno::
error::Errno
-