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May 2018

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One of my favourite ways of multi-threading on Windows

Delphi and stuff – Having blogged about a few bugs in multi-threading libraries recently, I want to show an easy and convenient alternative. It's minimalistic but it works. On Windows, the I/O completion port offers a way to use a thread pool for your multi-threaded application. Designed primarily for efficient ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2018-05-20 16:16

April 2018

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Another Bug

Delphi and stuff – So you've put in the time and effort to refactor your code and data for parallel execution and are eager to see some parallel action. Unfortunately, you might be disappointed; in some cases your tasks might get serialized, performed sequentially in a single thread. With the overhead you've just ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2018-04-28 10:58
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Don't lose time with a known Delphi bug affecting TParallel.Join

Delphi and stuff – Writing multi-threaded code is hard and takes a lot of time. That's why it's especially annoying to waste time with bugs like this. Reading (and enjoying) Primož Gabrijelčič's book Delphi High Performance, I've come across this paragraph in Chapter 7: Exploring Parallel Practices: There's not much ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2018-04-22 15:34
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Artificial Intelligence Transgender: Kings and Queens

Delphi and stuff – Researching for some Natural Language Processing tasks for a .NET application recently, I've come across Facebook's FastText library. FastText is an open-source, free, lightweight library that allows users to learn text representations and text classifiers. It works on standard, generic hardware. ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2018-04-15 19:13
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First steps with Lazarus Qt5 interface

Delphi and stuff – Steps for building and installing Qt5 for Lazarus Using a quick test project with partial code shown here: unit1.pas I'm using Qt 5.6.2 because that's the version with which Lazarus qt5 interface has been tested. You can experiment with later versions, too. Windows 32-bitUsing MinGW$(LazarusDir): ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2018-04-02 10:05

February 2018

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We're not interested in improving our product

Delphi and stuff – This morning I've found some sad news over at The Wiert Corner. Apparently, Jeroen Wiert Pluimers - a valued member of the Delphi community, whose work I appreciate a lot - got his MVP status and technical partner licenses revoked. Jeroen won't be able to support Delphi community and open source ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2018-02-11 16:01
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Updated chakracore-delphi examples

Delphi and stuff – chakracore-delphi has been updated to show some (still rather crude) example implementations of: setTimeout setInterval native Promise
Details Favorite? Off-Topic? Ondrej Kelle @ 2018-02-04 19:09

January 2018

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chakracore-delphi initial release

Delphi and stuff – The initial release of chakracore-delphi is out, published under the MIT license. Short summary: Comments, ideas and of course pull requests are very welcome. Cheers!
Details Favorite? Off-Topic? Ondrej Kelle @ 2018-01-12 18:12
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chakracore-delphi

Delphi and stuff – With the initial release coming up soon, here are a few teaser screenshots of chakracore-delphi, a new opensource library with Delphi and Free Pascal bindings and classes for Microsoft's ChakraCore Javascript engine: FPC 3.0.4 and Lazarus 1.8 build (win64): FPC 3.0.4 and Lazarus 1.8 build ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2018-01-06 15:19

December 2017

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pas2js Public Beta released

Delphi and stuff – A few days ago, first public Beta of pas2js has been released. See the demo (code). Happy holidays! :-)
Details Favorite? Off-Topic? Ondrej Kelle @ 2017-12-20 16:41
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fpcupdeluxe

Delphi and stuff – If you use Free Pascal and/or Lazarus and update them often to follow the development in trunk, or if you just need to use multiple versions side by side, have a look at fpcupdeluxe (GitHub). It's a GUI front-end which lets you easily select a release and build it, including cross-compilers, with a ...
Details Favorite? Off-Topic? Ondrej Kelle @ 2017-12-10 19:57

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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