Bottle.Number.is_zero
You're seeing just the macro
is_zero
, go back to Bottle.Number module for more information.
Guards that passes when a number is 0 (including float 0.0)
Examples
iex> is_zero(0) true
iex> is_zero(0.0) true
iex> is_zero(1) false
iex> is_zero({"anything", "else"}) false