Do public struct Do: Fn Do sequentially evaluates its arguments, and returns the evaluation of the last expression. If no expressions are provided, do returns an error. Reference. init(_:) Declaration Swift public init(_ exprs: Expr...) Parameters exprs Expressions to evaluate. © 2018 Fauna, Inc. All rights reserved. (Last updated: 2018-03-21) Generated by jazzy ♪♫ v0.8.2, a Realm project.