drop31.ex

defmodule Drop do

  def clown1(x) do
    5 * x
  end

  def clown2a(x)  do 5 * x end
  def clown2b (x) do 5 * x end
  def clown2c x   do 5 * x end

# iex(77)> Drop.clown2a(5)
# 5
# iex(78)> Drop.clown2a (5)
# 5
# iex(79)> Drop.clown2a 5
# 5
  
  def clown3a(x,y)  do x + y end
# def clown3b (x,y) do x + y end  # syntax error
  def clown3c x,y   do x + y end

# iex(80)> Drop.clown3a(5,6)
# 11
# iex(81)> Drop.clown3a (5,6)
# ** (SyntaxError) iex:81: unexpected parentheses. If you are making
# a function call, do not insert spaces between the function name
# and the opening parentheses. Syntax error before: '('
# 
# iex(81)> Drop.clown3a 5,6
# 11

# def clown4a(x,y), do:   x + y end  # syntax error
  def clown4b(x,y), do:
      x + y 
# def clown4c(x,y), do:x + y     # syntax error
# def clown4e x,y,   do:  x + y  # syntax error
  def clown4f(x,y) , do:  x + y
  def clown4g(x,y)  ,do:  x + y
# def clown4h(x,y) , do : x + y  # syntax error

end