soutaro · June 15, 2016 02:23
diff --git a/ruby -cw b/ruby -cw
 $ cat -n w.rb
     1	a = [1]
     2	
     3	a.each do |a|
     4	  a = 3
     5	end
     6	
     7	p a
 $ ruby -cw w.rb
 w.rb:3: warning: shadowing outer local variable - a
 Syntax OK
	$ cat -n w.rb
	1 a = [1]
	2
	3 a.each do \|a\|
	4 a = 3
	5 end
	6
	7 p a
	$ ruby -cw w.rb
	w.rb:3: warning: shadowing outer local variable - a
	Syntax OK