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Smalltalk

Object

subclass: #Room instanceVariableNames:'name maxpopulation currentPopulation visitors' classVariableNames: poolDictionaries:

!

!Room class methodsFor: 'construction'!
withName: theName andMaxPopulation: themaxpopulation

|result| result := Room new. result withName: theName andMaxPopulation: themaxpopulation. ^result

!!

!Room methodsFor: 'Initialization'!
withName: theName andMaxPopulation: themaxpopulation

name := theName. maxpopulation := themaxpopulation. currentPopulation := 0. visitors := Array new: maxpopulation.

!!

Eiffel

toewijzing :          :=
niet gelijk aan :     \=
null:                 Void  
string:               STRING
int:                  INTEGER     
this:                 Current  
return value:         Result

if cond then C1 else C2 end

class
  NEWCLASS                            -- de naam van je klasse
creation
  constructormethod                   -- constructoren aanduiden
feature{}                             -- globale variabelen      
  name:STRING
feature{}                             -- private other: feature{ANY}, feature{NAMECLASS1,NAMECLASS2}
  constructormethod(newname: like name) is       
  do                                  -- start method
     name :=  newname                 -- do stuff
  end                                 -- end constructor
feature{ANY}    
   get_name :STRING is                 -- get_name method (NAMING CONVENTIONS: get_name)
      do                               --start method
           Result := name              --return name
      end                              --end method    
invariant
   valid_name : not Current.name.is_equal("")
end                                   -- end class NEWCLASS

overerving voorbeeld

class
       AUDITORIUM
inherit
       ROOM	
            rename build as build_room end  -- redefine parent method
creation
        build
feature{}
        build(n: like name; p: INTEGER) is -- (arg :like var) or (arg : TYPE) 
        do
               build_room(n, p) -- constructor parent classe aanroepe		
       end
end

C#

Getters en setters:

• Mogelijkheid 1

private string foo;
public string Foo {
  get { return foo; }
  set { foo = value; }
}

• Mogelijkheid 2 (indien zowel getter en setter publiek) (C# 3.0+)

public string Foo { get; set; }