What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?

Question

What is the difference - technical, philosophical, conceptual, or otherwise - between

raise \"foo\"

and

raise Exception.new(\"f         


        

Answer 1

From the offical documentation:

raise   
raise( string )
raise( exception [, string [, array ] ] )

With no arguments, raises the exception in $! or raises a RuntimeError if $! is nil. With a single String argument, it raises a RuntimeError with the string as a message. Otherwise, the first parameter should be the name of an Exception class (or an object that returns an Exception when sent exception). The optional second parameter sets the message associated with the exception, and the third parameter is an array of callback information. Exceptions are caught by the rescue clause of begin...end blocks.

raise "Failed to create socket"
raise ArgumentError, "No parameters", caller