hooman

//: Playground - noun: a place where people can play


/// A protocol to provide an abstraction of types that hold a weak reference to a target object.
///
/// It is defined because a single generic implementation cannot support existentials, as they
/// do not conform to themselves or `AnyObject`. Most of its API is defined by protocol extensions
/// to makes it easier to create existential wrapper `struct`s or `final class`es.
///
/// Here is an example protocol and the corresponding weak reference

hooman

import Darwin

public protocol MutexValue {
    
    mutating func lock()
    
    mutating func locked() -> Bool
    
    mutating func unlock()
    

hooman

// Playground - noun: a place where people can play
//
//
//    By: Hooman Mehr (hooman@mac.com)
//  Gist: https://gist.github.com/hooman/599e381d5f037b87d20b (The latest version is always here)
//
//
// Update:  07/30/2014
//          Added WeaklyOwned & removeOrphans for memory management support, added more generics & basic access control.
//          08/06/2014

hooman

// RationalNumber.swift
//
// A basic implementation of Rational numbers in Swift 3.0.
// (c) 2016 Hooman Mehr. Licensed under Apache License v2.0 with Runtime Library Exception



/// A data type to model rational numbers in Swift.
///
/// It always uses fully-reduced representation for simplicity and clarity of comparisons and uses LCM

hooman

// A small set of utilities for working with Unicode and ASCII scalars. Here is what it does:
// 
// 1. Make `UnicodeScalar` strideable. This enables ranges of Unicode Scalars such as "a"..."z".
// 2. Add strideable Unicode.ASCII.Scalar (type alias `ASCII`) to enable type-safe manipulation of ASCII bytes. 
// 3. Define limited `+`/`-` operators for stridable types to make something like `"x" + ("A"-"a")` possible.


// 1. Make `UnicodeScalar` strideable. This enables ranges of Unicode Scalars such as "a"..."z".

// Constants used in `Strideable` conformance extension of `Unicode.Scalar`

hooman

// Playground - noun: a place where people can play
//
//  Notifications.swift
//
//  Created by Hooman Mehr (hooman@mac.com) on 7/26/14.
//  Copyright (c) 2014 Hooman Mehr. New BSD License.
//
// WARNING: This is a sample code to study and to demostrate some Swift capabilities
//          and limitations. Use it at your own risk.

hooman

//
//  HTMLBuilder.swift
//
//  This is a prototype code of a DSL to make it easier to generate HTML within Swift source code.
//
//  This version of the prototype usues global constants for html elements because of a compiler limitation / bug.
//  The intended behavior was having these globals static properties of `Html` type.
//
//  Created by Hooman Mehr on 04/07/17.
//  Copyright © 2017 Hooman Mehr. See the MIT license at the bottom.

hooman

// An operator for tuple splat of simple function arguments (up to six arguments implemented).
// by Hooman Mehr (hooman@mac.com)
// Source released as public domain.

precedencegroup TupleSplatPrecedence {
    associativity: left
    higherThan: BitwiseShiftPrecedence
}

// Infix operator for on the fly tuple splat:

hooman

// The correct implementation of `Equatable` (and `Comparable`) can be tricky for class
// hierarchies. To make it easier, it is better to follow a well-defined pattern. Here
// is my suggestion on how to do it:

// 1. Define a protocol for polymorphic test function for equality (or comparison): 
// Note: operators are not polymorphic (not virtual in C++ terms)). The function to 
// call is determined and hard-coded at compile time.

/// A protocol to ammend `Equatable` for use with `class` types.

hooman

// Simulating multimethods in Swift

// Consider these two hierarchies:

//       FamilyA
//      /       \
//    A1         A2
//      \
//       SubA1