A little presentation about Ruby Exceptions.

1. Ruby Exceptions!

2. Hierarch and usage

3. NoMemoryError!

4. NoMemoryError
Raised when
memory
allocation fails.

5. ScriptError!

6. ScriptError
Superclass for errors
raised when a script can
not be executed

7. ScriptError
Hierarch

8. LoadError
Raised when a file
required fails to load

10. NotImplementedError
Raised when a
feature is not
implemented on the
current platform

12. SyntaxError
Raised when
encountering Ruby
code with an invalid
syntax

14. SignalException!SignalException!

15. Raised when a
signal is
received
SignalException

16. SignalException
Hierarch

17. Interrupt
Raised with the interrupt
signal is received, typically
because the user pressed on
Control-C

19. StandardError!

20. StandardError
The most standard error types
are subclasses of
StandardError

21. StandardError
Hierarch

22. ArgumentError
Raised when the
arguments are
wrong

24. IndexError
Raised when the
given index is
invalid.

26. StopIteration < IndexError
Raised to stop the
iteration, in
particular by
Enumerator#next

28. IOError
Raised when an IO
operation fails.

30. EOFError < IOError
Raised by some IO
operations when
reaching the end of
file, nil for example

32. LocalJumpError
Raised when Ruby
can't yield as
requested

34. NameError
Raised when a given
name is invalid or
undefined

36. NoMethodError < NameError
Raised when a
method is called on a
receiver which
doesn't have it
defined

38. RangeError
Raised when a given
numerical value is
out of range

40. FloatDomainError < RangeError
Raised when
attempting to
convert special float
values

42. RegexpError
Raised when given
an invalid regexp
expression.

44. RuntimeError *default for raise
A generic error class
raised when an
invalid operation is
attempted.

46. SecurityError
Raised when
attempting a potential
unsafe operation,
typically when the
$SAFE level is raised
above 0.

48. SystemCallError
SystemCallError is the
base class for all low-
level platform-
dependent errors.

50. SystemStackError
Raised in case of a
stack overflow.

52. ThreadError
Raised when an
invalid operation is
attempted on a
thread.

54. TypeError
Raised when
encountering an
object that is not of
the expected type.

56. ZeroDivisionError
Raised when
attempting to divide
an integer by 0

58. SystemExit!

59. Raised by exit to
initiate the
termination of the
script.

61. fatal – impossible to
rescue!

62. Thanks

63. @johalf
johalffarina@gmail.com