creating view programatically

ViewCreator.swift

@discardableResult
func createView<T>(_ view: T,
                   parent: UIView?,
                   setting: ((T) -> ())? = nil,
                   constraint: ((ConstraintMaker) -> ())? = nil) -> T where T: UIView {

    switch parent {
    case let stack as UIStackView:
        stack.addArrangedSubview(view)
    case let collectionCell as UICollectionViewCell:
        collectionCell.contentView.addSubview(view)
    case let tableCell as UITableViewCell:
        tableCell.contentView.addSubview(view)
    default:
        parent?.addSubview(view)
    }

    if let setting = setting {
        setting(view)
    }

    if let constraint = constraint {
        view.snp.makeConstraints(constraint)
    }
    return view
}

import SnapKit
import UIKit