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Function return value to variable

I am having trouble assigning function return value to variable. Why do I get the function returned instead of the final product when I log it to console?

time = ->
  today = new Date()
  minutes = today.getMinutes()
  if minutes < 10 then minutes = "0#{minutes}"
  hours = today.getHours()
  if hours < 10 then hours = "0#{hours}"
  "#{hours}:#{minutes}"
console.log time

Simply add do to execute the function (if you expect "time" to contain the string, not the function):

time = do ->

or use "time" as a function, ie, invoke it:

console.log time()

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