Author: Alexandru Ciobanu

Strings, PChars and reference counting

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Hi folks, in today’s post I will continue with reference counting specifics of Delphi in the particular case of Strings. We’ll start with a small example: What will the output of this program be? The obvious result (the…

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C++ Builder TypeInfo alternative.

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I bet most Delphi developers know about TypeInfo operator. It provides type information somehow similar to reflection in Java or .NET (of course a lot more limited). Take this simple example: It will simply write “Byte” on the…

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That stupid garbage collector

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I’ve heard this phrase a few times in regards to Delphi’s reference counting mechanics. Before continuing with this post please note — Delphi doesn’t have a Garbage Collector (as Java or .NET)! It uses Reference Counting as part…

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Delphi 2009: reference to

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It’s probably not news anymore but Delphi 2009 supports anonymous methods out of the box. To be able to support them, CodeGear developers added a new type of a “pointer to a method” called a managed method reference:…

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Generics.Defaults: Bug

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There is a bug in Generics.Defaults unit in Delphi 2009. If you read my previous post: Generic Defaults you should know already about the “3 bytes long” data types and how are those passed as const parameters to…

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Generic Defaults

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One important part of any generic collection classes are the “type support” functions. And what I mean are the functions specific to each type that perform: Comparison – will return a value indicating if A > B or…

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Delphi 2009 – Exit;

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A very useful and cool feature in Delphi 2009 is the Exit keyword. Yes, it’s that Exit that “returns” from a function call. So what’s so exiting about it? Nothing really – for people coming from C-like languages,…

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Delphi Generics: Problem 1

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Kids, don’t try this at home 🙂 Error: [DCC Fatal Error] Tests.DynamicArray.pas(772): F2084 Internal Error: URW1135 There you have it 🙂 The fix is rather simple but annoying: Declare a new type in the class/record like this: And…

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TSendMail Action

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If you’ve ever wondered how to use TSendMail action in ExtActns unit – drop it, it’s useless. I’ve had a few people complaining they don’t know how to set the Recipients and Subject set it – you can’t…

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New Delphi 2009 Generics

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Finally Generics are a part of Delphi for Win32! This is a big push for CodeGear in order to bring Delphi out of stagnation it has been the last couple of years. Impressions after working with generics for…

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