ronascentes

class Subject {

    hidden [System.Collections.ArrayList]$observers

    Subject() {
        $this.observers = New-Object System.Collections.ArrayList

    }

    Attach([Observer]$o) { $this.observers.Add($o)    }

ronascentes

class Logger {
    log($message) {  # Define a method called "log" that takes a message as input
        $message | Out-Host  # Output the message to the console
    }
}

class TimeStampingLogger : Logger {  # Define a class called "TimeStampingLogger" that inherits from "Logger"
    $logger  # Declare a variable called "logger"

    TimeStampingLogger($logger) {  # Define a constructor that takes a "logger" as input

ronascentes

class Command {
    execute() {
        "[$(get-date)] Logging execute of command [$this]" | Out-Host  # Logs the execution of the command
    }
}

class Loony : Command {    
    execute() { 
        ([Command]$this).execute()  # Calls the execute method of the base class (Command)
        "You're a loony." | Out-Host  # Outputs "You're a loony."

ronascentes

class CPU {

    freeze() { "$this freezing" | Out-Host }
    jump($position) { "$this jump to $position" | Out-Host }
    execute() { "$this execute" | Out-Host }
}

class Memory {
    load($position, $data) { 
        "$this load $position $data" | Out-Host 

ronascentes

<#
    Define an object that encapsulates how a set of objects interact.
    Mediator promotes loose coupling by keeping objects from referring to each other explicitly, and it lets you vary their interaction independently.
#>

class ChatMediator {
    $users

    ChatMediator() {
        $this.users = New-Object System.Collections.ArrayList

ronascentes

# Singleton

class Product {
    $Name

    Product($name) {
        $this.Name = $name
    }
}