Ruby » Ruby master

Feature #8912

Updated by nobu (Nobuyoshi Nakada) over 10 years ago

=begin 
 When we have a custom exception class with a custom (({initialize})) `initialize` method whose arity is not (({1})): `1`: 

     class MyException < StandardError 
       def initialize x, y 
         super("Something went wrong with #{x.inspect} because #{y}, blah blah") 
       end 
     end 

 in order to raise it, we have to create a new instance of it explicitly using (({new})), `new`, and embed that under (({Kernel#raise})). `Kernel#raise`. 

     raise(MyException.new(:foo, :bar)) 

 This is inconvenient, and does not look object oriented. I propose that there should be (({Exception#raise})), `Exception#raise`, which is public, so that we can do: 

     MyException.raise(:foo, :bar) 

 A Ruby implementation may be like this: 

     class Exception 
       def self.raise *args; Kernel.send(:raise, *args) end 
     end 

 This will disallow us from calling the private method (({Kernel#raise})) `Kernel#raise` (without an explicit receiver) within the context of an (({Exception})) `Exception` class unless we use (({send})), `send`, but I think such use case is rare, and that should not be a problem. 
 =end 

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