init(length:)

import BSONABI

Models the BSON type system and the binary interface of the BSON serialization format.

@frozen struct Shape

An efficient interface for checking the shape of a list or binary array at run time.

@frozen enum BSON

The namespace for all BSON types.

@frozen struct Int

A signed integer value type.

let length: Int

func expect(multipleOf stride: Int) throws -> Int

Returns the quotient if the number of elements in the relevant collection is a multiple of the specified stride, or throws a ShapeError otherwise. If the stride is zero, this method also throws a ShapeError, unless the length is zero as well.