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is​

is(
    @llll  ## required
) -> llll/null

Returns the data type of the input, as one of the following symbols:

  • integer
  • real
  • rational
  • symbol
  • llll
  • pitch
  • function

Arguments​

  • @llll [llll] (required)

Output​

Data type of the input. [llll/null]

warning

is is a built-in function in the bell programming language and is not unique or exclusive to bellplay~. As such, is will return null without raising an error if required arguments are not provided.