Does Delphi make you a better programmer? Is Object Pascal code more readable?
There is an algorithm with a mystery constant that rose to fame in John Carmack’s Quake III Arena C code for quickly estimating the inverse square root of a 32-bit floating-point number.
float Q_rsqrt( float number )
{
long i;
float x2, y;
const float threehalfs = 1.5F;
x2 = number * 0.5F;
y =…
This sample demonstrates how to use the filter feature ofTFDQuery.
To this end, the sample implements different preset filters. Moreover, you can edit your own filtering condition andapply the filter to a datasetin order to search for specific…
Build Powerful Master-Detail Relationships With Centralized Cached Updates In Delphi
January 7, 2021
First, theCentralizedCachedUpdatessample sets up range-basedmaster-detail relationshipsbetween datasets using twoTFDQueryobjects. Then, the sample shows you how to use aTFDSchemaAdapterobject to enable theCentralized…
TheMoniLayerClientssample shows you how to use the FireDACtracing and monitoringcapabilities to show how an application is communicating with a FireDAC monitor client. To this end, the sample uses two different FireDAC monitor clients: FlatFile-client and Remote-client. To use both monitor clients, the sample uses two client link components: the TFDMoniFlatFileClientLink…
ThexDBMSsample shows you how use theTFDLocalSQLclass to implement a cross-DBMS query application. To this end, each queryable dataset must be registered with theLocal SQL engineusing theDataSetscollection property.Note: The…
Easily Improve Your Productivity With The Delphi Dev Shell Tools Windows Shell Extension
January 4, 2021
This Windows Shell Extension contains really useful tasks for Object Pascal developers. It creates right click options in Windows Explorer that really help you work with your Delphi projects to their fullest and save massive amounts of time. Go through the features and…
The Sample is using the “Custom” list view item appearance value and configuring the appearance properties of list view items at design time. It also shows how to do this at run time.
When you run the application, it shows a list view. Each list item shows a detail text under its main label.
Tap theSet Propertiesbutton to change the appearance of the list view at run…
TheAsyncsample shows you how to use theIFDPhysCommandinterface to configure the differentasynchronous execution modes. To this end, the sample uses a group of four radio buttons. Each radio button sets…
View PDFs On iOS With This Powerful Native PDF Library For Delphi FireMonkey By Winsoft
January 1, 2021
Introduction
Native PDF library supports iOS only. It uses PDFKit framework. In the next short you will find installation instructions on how to add the library in the Rad Studio.
2. Components in the Demo and what they do.
This Demo does not contain any…
High-Performance FastMath Library For Math-Intensive Applications On iOS, macOS, Android, And Windows
January 1, 2021
FastMath is a Delphi math library created by Erik van Bilsen, Co-Founder and Software Developer at Grijjy, Inc. It is optimized for speed, but that speed is sometimes at the expense of accuracy due to insufficient error checking. According to the library, it achieves good performance by using hand-optimized assembly code. One way it differs from what is built into the Delphi RTL is that accuracy…
