Erik van Bilsen Profile
Erik van Bilsen
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VOTELightweight Multicast Events
Erik van Bilsen
A multicast event is an event that can have multiple listeners (or event handlers). Some languages (such as .NET languages) have built-in support for multicast events. This article shows an implementation for Delphi. This implementation… … Read more
2 years ago in Custom Managed Records, Delphi, generics, Nested Types, Operator Overloading, Uncategorized, Variant Records
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The Curiously Recurring Generic Pattern
Erik van Bilsen
This curious little pattern can be helpful for certain problems that involve generics. We’ll look at what it is, and at a couple of use cases for it. What is it? The Curiously Recurring Generic… … Read more
3 years ago in Collections, Delphi, generics, Patterns, Tips & Tricks
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Happy New Year from Team Grijjy!
Erik van Bilsen
Best wishes to all fellow Delphi developers and the team behind Delphi! Let’s have some fun with FireMonkey! The little video above is a recording of a small (3D) FireMonkey app. You can test it… … Read more
4 years ago in Delphi, FireMonkey, Shaders, Tips & Tricks, Uncategorized
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Build your own Error Reporter – Part 3: macOS Intel
Erik van Bilsen
A while ago, I started a small series about trapping exceptions and turning them into an error report for consumption by your development team. This enables you to get information about errors that happen out… … Read more
4 years ago in Delphi, Foundation, Libraries, macos, Tips & Tricks, Uncategorized
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High-Precision Floating-Point Types for Delphi
Erik van Bilsen
If Single and Double precision floating-point types don’t cut it for you, then the Neslib.MultiPrecision library may be just the thing. It provides up to 4 times the precision, while still being pretty fast compared… … Read more
4 years ago in Libraries, Optimization, Uncategorized
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Decrease Your Build Time
Erik van Bilsen
Delphi is known for its fast build speeds, at least for Win32 apps. But when you compile your same FireMonkey app for other platforms, the build time increases dramatically and can be up to 15… … Read more
4 years ago in Optimization, Tips & Tricks, Uncategorized
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Deployment Manager now Open Source
Erik van Bilsen
The Grijjy Deployment Manager (DeployMan) is a tool to simplify the deployment of files and folders for iOS and Android apps written in Delphi. It is especially useful if you need to deploy a lot… … Read more
4 years ago in Delphi, deployment, Uncategorized
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Introduction to Shader Programming
Erik van Bilsen
In this post, I will show you how to take full advantage of the GPU by creating custom shaders. Shaders are used in two places in the FireMonkey framework: for creating materials that you can… … Read more
4 years ago in Delphi, FireMonkey, GPU, Shaders, Uncategorized
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An XML DOM with just 8 bytes per node
Erik van Bilsen
I present a small XML library that parses or creates XML documents with an extremely light-weight DOM that uses just 8 bytes per node. This post shows some of the interesting algorithms that make this… … Read more
5 years ago in Delphi, Libraries, Optimization, Tips & Tricks, Uncategorized, XML
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Custom Managed Records for Smart Pointers
Erik van Bilsen
In this 3rd part in (what turns out to be) a series about Custom Managed Records, we take a look at how they can be used to create smart pointers. About Smart Pointers But first… … Read more
5 years ago in Custom Managed Records, Foundation, Patterns, Tips & Tricks, Uncategorized
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Automate Restorable Operations with Custom Managed Records
Erik van Bilsen
There are those common try..finally blocks that you write over and over again. For example entering and leaving a critical section to protect resources from multiple threads, or calling BeginUpdate and EndUpdate to efficiently bulk-update… … Read more
5 years ago in Custom Managed Records, Foundation, Patterns, Tips & Tricks, Uncategorized
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Wrapping C(++) APIs with Custom Managed Records
Erik van Bilsen
Delphi 10.4 introduced Custom Managed Records. In this post we show how you can use this new language feature to wrap third party C(++) APIs in an easy to use model. We also compare this… … Read more
5 years ago in C++, Delphi, Libraries, Tips & Tricks, Uncategorized
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Boost Mac performance with Metal and Delphi 10.4
Erik van Bilsen
Is your Mac app a little unresponsive or does it feel sluggish? Does your MacBook laptop turn into a lap-heater when running your app? Then the new Metal support in Delphi 10.4 may be just… … Read more
5 years ago in Delphi, macos, Metal, Optimization, Tips & Tricks, Uncategorized
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Mapping Delphi Types to Indices at Compile Time
Erik van Bilsen
Say what now? In this post I will show you how you can use generics and class variables to generate unique incrementing indices for any Delphi type. For example, the Integer type could map to… … Read more
5 years ago in Delphi, generics, Patterns, Tips & Tricks, Tricks, Types, Uncategorized
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