Prism KB: Delphi Prism Topic

RemObjects Software and Embarcadero Technologies joined forces to develop Delphi Prism, a next generation development suite for .NET and Mono, based on RemObjects Software's award-winning Oxygene compiler technology.

Delphi Prism replaced both Delphi for .NET and the existing Oxygene product, allowing the two companies to work together on providing one unified solution for managed development.

Topic Articles (Newest to Oldest)

25+ Articles Found in the Delphi Prism Topic  (or one of the sub-topics in bold above)

	KB Article
Mike Prestwood	1. Delphi Prism Member Events (event) Like all .Net languages, Prism events are a separate type of class member. You define a member event by using the event keyword. Events depend on Delegates to define the signature (the type) of the event they represent and they maintain a list of multiple subscribers - unlike in Delphi for Win32, where each event can only have one handler Posted to KB Topic: Delphi Prism 28 months ago	Code 1509 Hits	Delphi Prism
Mike Prestwood	2. Delphi Prism Event Handler The Delphi Prism Most notable for Delphi developers is the fact that Prism does not offer initialization nor finalization sections. Posted to KB Topic: Delphi Prism 28 months ago	Code 2496 Hits	Delphi Prism
Mike Prestwood	3. Delphi Prism Empty String Check (length) In Prism, a string can be nil (unassigned), assigned an empty string (""), or assigned a value.  Therefore, to check if a string is empty, you have to check against both nil and (""). Alternatively, you can check the length of the string or use String.IsNullOrEmpty. Posted to KB Topic: Delphi Prism 28 months ago	Code KB Post 2123 Hits	Delphi Prism
Mike Prestwood	4. Delphi Prism Polymorphism Prism supports the following types of polymorphism: Parametric Polymorphism (Method Overloading) Inheritance-Based Polymorphism Interface-Based Polymorphism (Interfaces) Ad-Hoc Polymorphism (Operator Overloading) Posted to KB Topic: OOP 34 months ago, and updated 32 months ago (1 Comments , last by mtiede )	Code 2039 Hits	Delphi Prism
Mike Prestwood	5. Delphi Prism Pointers Although pointer data types in Prism coding are less important than in other languages such as C++, Prism does support developer defined pointers. Use the ^ operator to declare a pointer data type. Use the @ operator to return the current address of a variable. In .Net managed coding the use of pointers is not safe because the garbage collector may move memory around. To safely use pointers, use the unsafe keyword. However, avoid unsafe code if possible. Posted to KB Topic: Language Details 34 months ago	Code 2696 Hits	Delphi Prism
Mike Prestwood	6. Share Code with Delphi and Prism Can I share code between a Delphi and a Dephi Prism project? I want to have a single source Win32 and .Net application. Posted to KB Topic: Tool Basics 35 months ago	FAQ KB Post 1617 Hits	Delphi Prism
Mike Prestwood	7. Delphi Prism Overriding (virtual, override) Same as Delphi. In Prism, you specify a virtual method with the virtual keyword in a parent class and replace it in a descendant class using the override keyword. Call Inherited in the descendant method to execute the code in the parent method. Posted to KB Topic: OOP 34 months ago	Code Article 1977 Hits	Delphi Prism
Mike Prestwood	8. Delphi Prism Self Keyword (Self) Within the implementation of a method, the identifier Self references the object in which the method is called. The Self variable is an implicit parameter for each object method. A method can use this variable to refer to its owning class. Posted to KB Topic: Language Details 35 months ago	Definition 1582 Hits	Delphi Prism
Mike Prestwood	9. Oxidizer Oxidizer is a free tool that (in combination with ShineOn) is provided to help to port Delphi (Win32 and .NET) projects to the Delphi Prism language. Oxidizer is a command line tool that will adjust your .pas source files for common differences between the two languages. Posted to KB Topic: Tool Basics 35 months ago	Download 2200 Hits	Delphi Prism
Mike Prestwood	10. ShineOn A Delphi Prism implementation of the Delphi for Win32 RTL. Posted to KB Topic: Tool Basics 35 months ago	Download 1712 Hits	Delphi Prism
Mike Prestwood	11. Delphi Prism Class Contracts (require, ensure) Prism supports class contracts with its require and ensure keywords. The require keyword is a pre condition that must be true when the method is called. The ensure keyword is a post condition that much be true when a method exits. With either, if the condition evaluates to false, then an assertion is generated. They can be used to check for the validity of input parameters, results, or for the state of the object required by the method. The require and ensure keywords will expand the method body to list the preconditions; both sections can contain a list of Boolean statements, separated by semicolons. Posted to KB Topic: OOP 35 months ago	Code 1487 Hits	Delphi Prism
Mike Prestwood	12. Delphi Prism Left of String (Substring) Delphi Prism Left of String Posted to KB Topic: Language Details 35 months ago	Code 2034 Hits	Delphi Prism
Mike Prestwood	13. Delphi Prism String Concatenation (+) Unlike Delphi, Prism performs implicit casting. To concatenate two strings, a string to an integer, or a string to a floating point number, use the + operator. For example, to convert a floating point number to a string just concatenate an empty string to the number as in "" + 3.2. Posted to KB Topic: Language Basics 35 months ago, and updated 28 months ago (3 Comments , last by mtiede )	Code KB Post 2265 Hits	Delphi Prism
Mike Prestwood	14. Delphi Prism Logical Operators Prism logical operators: and and, as in this and that or or, as in this or that not Not, as in Not This xor either or, as in this or that but not both Posted to KB Topic: Language Basics 35 months ago	Code   1614 Hits	Delphi Prism
Mike Prestwood	15. Delphi Prism Exception Trapping (try..except, try..finally) Use a try..except..end block to trap and process errors. Posted to KB Topic: Language Details 35 months ago	Code 2891 Hits	Delphi Prism
Mike Prestwood	16. The Delphi Prism Primer http://prismwiki.codegear.com/en/The_Prism_Primer Posted to KB Topic: Language Details 35 months ago	Link 1350 Hits	Delphi Prism
Mike Prestwood	17. Delphi Prism Deployment Overview Prism projects require the .Net framework and any additional dependencies you've added such as Crystal Reports. In Visual Studio.Net, you can create a Setup and Deployment project by using any of the templates available on the New Project dialog (Other Project Types). Prism doesn't directly support ClickOnce. At least not yet. In other words, there isn't a Security tab on the solution properties dialog. To create a ClickOnce deploy package, search the internet for mage.exe and mageui.exe. In addition, you can use any of the many free and commercially available installation packages. Posted to KB Topic: Tool Basics 35 months ago	Code 1422 Hits	Delphi Prism
Mike Prestwood	18. Delphi Prism Overloading (implicit) Like Delphi, Prism supports overloading. However, Prism supports implicit overloading (no need for an overload keyword). Posted to KB Topic: Language Details 35 months ago	Code KB Post 2074 Hits	Delphi Prism
Mike Prestwood	19. Delphi Prism Unary Operators The Prism unary operators are: + - Not Posted to KB Topic: Language Basics 35 months ago, and updated 35 months ago	Code KB Post 1757 Hits	Delphi Prism
Mike Prestwood	20. Delphi Prism Prevent Derivation (sealed, final) Same keywords as Delphi (sealed uses slightly different syntax). With Prism, use the sealed keyword before the class keyword to prevent a class from being inherited from and use the final keyword to prevent a method from being overridden. Posted to KB Topic: OOP 35 months ago	Code   1936 Hits	Delphi Prism
Mike Prestwood	21. Delphi Prism Inlining (Automatic) In Prism, inlining is automatically done for you by the JIT compiler for all languages and in general leads to faster code for all programmers whether they are aware of inlining or not. Posted to KB Topic: Language Details 35 months ago	Code   1710 Hits	Delphi Prism
Mike Prestwood	22. Delphi Prism Assignment (:=) Same as Delphi. Posted to KB Topic: Delphi Prism 36 months ago	Code 1463 Hits	Delphi Prism
Mike Prestwood	23. Delphi Prism Finalizer (finalize()) Unlike Delphi, Delphi Prism uses the .Net garbage collector to free managed object instances. Prism does not have nor need a true destructor. In .Net, a finalizer is used to free non-managed objects such as a file or network resource. Because you don't know when the garbage collector will call your finalizer, Microsoft recommends you implement the IDisposable interface for non-managed resources and call it's Dispose() method at the appropriate time. Posted to KB Topic: OOP 36 months ago, and updated 28 months ago	Code Article   2131 Hits	Delphi Prism
Mike Prestwood	24. Partial Methods versus Abstract Methods What is the difference between a partial method and an abstract method? Posted to KB Topic: Delphi Prism 36 months ago	FAQ 1537 Hits	Delphi Prism
Mike Prestwood	25. Delphi Prism Constructors (constructor + class name) Prism uses unnamed constructor methods for constructors. Prism also supports a Create constructor method for backward compatibility with Delphi for Win32. Posted to KB Topic: OOP 36 months ago, and updated 35 months ago	Code Article   2609 Hits	Delphi Prism

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