Delphi array constructors performance (or lack of)
In Delphi you can initialize a dynamic array in two ways, either manually or via the Create magic constructor
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Introducing TRefCountedObject
DWScript source code recently introduced a newcomer: TRefCountedObject.
This base class takes the place of TObject in dwsUtils, and is now present throughout the DWScript code. What it adds is, well, a manually reference-counted class.
Casting an Interface to a Class, the efficient way
Delphi 2010 added support for the “as” to cast an interface reference to its implementation class.
Here is an alternative that can help both performance and correctness.
OptimalCode – “Delphi Optimization Guidelines”
If you recognize the title of this article by Robert Lee, then chances are you’ve been around Delphi for a while! 🙂
Alas the optimalcode.com website and Robert Lee disappeared years ago without a trace, but the “Delphi Optimization Guidelines” (dating back from 2002-3003) has been safeguarded and preserved. Recently someone pointed to me that the mirror I had in my Links section had disappeared too…
Getting Rid of the Middleman
On this StackOverflow question David Heffernan asked about a hack I’m using in DWScript’s UnifyAssignString.
SynEdit performance bragging rights?
Committed another round of speedups in the SynEdit SVN, and AFAICT SynEdit is now amongst the fastest text and highlighting editors out there!
To benchmark it yourself, if you don’t have a large text file hanging around, you can make a “meaningful” one easily.
Fixing TCriticalSection
Delphi XE2 VCL Styles and 3D
…or when the old/new VCL mule shows it can still kick!
I was asked how hard it would be to do yet-another-Cover Flow-clone with VCL+GLScene, and how that would stand vs using FireMonkey on Windows.
Memory Manager Investigations
André Mussche on Google+ investigated the performance of several Memory Managers for Delphi, in single-threaded & multi-threaded situations, with detailed results and charts on performance and memory usage.
Great work and interesting findings!
Delphi XE2-64bit: bottleneck in trigonometric functions?
The 64bit introduced SSE2 maths, replacing the silicon-based implementations of the FPU by software.
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