adding pres about exceptions in Ruby #2
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adding pres about exceptions in Ruby
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| # 9 - creating custom error classes | ||
| #class HeroError < Exception; end | ||
| HeroError = Class.new(Exception) |
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better as HeroError = Class.new(StandardError) ✨
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On Sat, Aug 1, 2015 at 2:47 AM, Zoran Majstorovic notifications@github.com
wrote:
In 2015-07-31/dario_ruby_exceptions.rb
#2 (comment):+# -> common exceptions:
+# * RuntimeError - default error raise using the method |raise|
+# * NoMethodError - object can't resolve a name of the message it receives to a method.
+# * NameError - interpreter comes across an identifier it can't resolve. It can be variable name,
+# method name.
+# * IOError - error caused by trying to read a closed file, write to a read-only file etc.
+# * TypeError - method receives an argument with the wrong type.
+# * ArgumentError - method receives incorrect number of arugments.
+# -> they are all descendants of the class Exception
+#
+# Rescuing with a rescue block:
+# -> begin > rescue > end
+
+# 9 - creating custom error classes
+#class HeroError < Exception; end
+HeroError = Class.new(Exception)better as HeroError = Class.new(StandardError) [image: ✨]
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