codesnips

protocols

python 
from __future__ import annotations

from dataclasses import dataclass, field
from decimal import Decimal, ROUND_HALF_UP
from typing import Optional, Protocol

Composable Order Discount Pipeline With Rule Objects in Python

pipeline strategy-pattern discounts
by codesnips 3 tabs
swift 
import UIKit

// MARK: - Custom Delegate Protocol
protocol PostCellDelegate: AnyObject {
    func postCell(_ cell: PostTableViewCell, didTapLike post: Post)
    func postCell(_ cell: PostTableViewCell, didTapComment post: Post)

UIKit delegates and protocols

swift uikit delegates
by Sofia Martinez 1 tab