contains

contains(
    @llll ? ## required
    @depth ? ## required
    @mindepth 1
    @maxdepth 1
) -> llll/null

note

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

Returns a summary of the data types contained in an llll. The return value is encoded as a bit field, with the following values:

• 1: null
• 2: integer
• 4: rational
• 8: double (float)
• 16: symbol
• 32: sublist
• 256: pitch.

By default, only the contents of the root level are considered. This can be changed with the @mindepth and @maxdepth arguments.

---

Arguments

• @llll [llll] (required)
• @depth [int/llll/null] (required)
• @mindepth [int] (default: 1)
• @maxdepth [int] (default: 1)

---

Output

Summary of the data types contained in an llll. [llll/null]

warning

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