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May 2017

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Big Ball of Mud

Delphi and stuff – Recently I've spoken to people at quite a few companies where Delphi is used to develop their software. There's a pattern which is very hard to miss or ignore: Every one of them so far wants to get away from Delphi. They are all very dependent on it and still need it to continue running their ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2017-05-19 18:00

December 2016

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Colours on my keyboard

Delphi and stuff – A few days ago I had to consider reinstalling Windows on my notebook. Instead I decided to switch to Linux Mint. I've been using Linux Mint in virtual machines for a few years and it worked very well for me. This is the first time I run Linux directly on the host. For development I keep a few ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-12-24 08:26

October 2016

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Delphi Perspectives: Kick-Start or the Last Kicks?

Delphi and stuff – I've received another e-mail offer from Embarcadero to upgrade my Delphi 10.1 Berlin Starter Edition to Professional for €749 (claiming to save over €2000). The offer is valid this weekend only and includes: Delphi 10.1 Berlin Professional upgrade Mobile Add-On Pack "Bonus Packet" with VCL and ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-10-15 14:55

September 2016

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Potential Deadlocks in Parallel.For

Delphi and stuff – Recently, I've come across some C# code deadlocking quite reproducibly while executing some tasks using Parallel.For method. The seemingly innocuous code lead to an "obscure situation" exactly as described in this blog post by Stephen Toub: Does Parallel.For use one Task per iteration? ...iterations ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-09-11 19:31
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No runtime type information on interface properties

Delphi and stuff – You might have tried to decorate an interface property in Delphi with a custom attribute like in this question on StackOverflow. Unfortunately, that won't work, as I explained in my answer. No runtime type information is generated for interface properties so your attribute will have no effect, even ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-09-02 18:36

August 2016

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Free Delphi Starter Edition

Delphi and stuff – Interesting offer by Embarcadero: Delphi Starter Edition Special Offer
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-08-23 11:56
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Using RemObjects Hydra to consume a .NET WCF service from Delphi

Delphi and stuff – Using RemObjects Hydra is probably the easiest way to consume a WCF service from Delphi in case you need to support .NET-specific bindings which might require a lot of work to implement on your side but are already available for .NET. This series of videos shows how you can write a managed Hydra ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-08-19 19:16
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Include resource files in your Delphi build process

Delphi and stuff – Quite often people don't know about this neat little feature, as recently in this g+ discussion, too. You can simply make any .rc file a part of your project and its build process. There's a BrccCompile target defined in your $(BDS)\bin\CodeGear.Delphi.Targets file which is included in every Delphi ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-08-05 14:25

July 2016

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Embracing .NET with RemObjects Hydra

Delphi and stuff – If you're a Delphi shop and find yourself (sometimes) jealous of all the .NET goodies have a look at RemObjects Hydra (more details here). It's a framework which allows you to mix and use VCL, FireMonkey and .NET code modules in a single mixed-mode application. (They've recently started the "Escape ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-07-17 22:47

June 2016

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Free Pascal and Lazarus foundation

Delphi and stuff – The Free Pascal and Lazarus foundation is a non-profit organisation dedicated to the promotion and sponsoring of the open source Free Pascal and Lazarus projects.
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-06-29 21:58
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Escape from Delphi

Delphi and stuff – Interesting: "Escape from Delphi" offer by RemObjects.
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-06-29 21:54

April 2016

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SQL Server Bulk Copy using Delphi

Delphi and stuff – When inserting a lot of data into a SQL Server table, the memory-based bulk copy exposed by the IRowsetFastLoad interface in Microsoft's OLE DB providers is the fastest way. Here are the steps listed in the example above (with some comments added by me): Establish a connection to the data source. ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-04-03 18:44

March 2016

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The strange limitation of 64 threads

Delphi and stuff – When using the Windows I/O Completion Port (IOCP), people seem to limit their thread pools to a maximum of 64 threads. This is probably caused by the fact that WaitForMultipleObjects limits the number of input handles with the nice magic constant MAXIMUM_WAIT_OBJECTS (which happens to be 64). Here ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2016-03-27 19:11

August 2015

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Starting FPC compiler changed to 2.6.4

Delphi and stuff – The starting FPC compiler (used to compile the latest trunk FPC) has been 2.6.2 for some time now. This has changed recently; to compile the latest trunk FPC you need FPC 2.6.4 which has not yet been pushed to official repositories. At the moment the easiest work-around is to upgrade to FPC 2.6.4 ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2015-08-26 14:22

July 2015

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FPC and Lazarus development environment (follow-up)

Delphi and stuff – I've just done a fresh installation of Linux Mint 17.2 'Rafaela' MATE 64-bit edition from scratch. I've followed my previous notes to set up my FreePascal and Lazarus development environment, with success.
Details Favorite? Off-Topic? Ondrej Kelle @ 2015-07-04 22:51
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