is

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

note

is is a built-in function in the bell programming language and is not unique or exclusive to bellplay~.

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 will return null without raising an error if required arguments are not provided.