Calling a RESTful web service using Indy is pretty straight forward. Add IdHTTP to your uses clause. Remember that IdHTTP needs the “HTTP://” prefix on your URLs. function GetURLAsString(const aURL: string): string; var lHTTP: TIdHTTP; begin lHTTP := TIdHTTP.Create; try Result := lHTTP.Get(aURL); finally lHTTP.Free; end; end;
Windows file caching is very effective, especially if you are using Vista or later. TFileStream is a loose wrapper around the Windows ReadFile() and WriteFile() API functions and for many use cases the only thing faster is a memory mapped file. However, there is one common scenario where TFileStream becomes a performance bottleneck. That is … Read more
try this Const Elements =3; MyArray : array [1..Elements] of string = (‘element 1′,’element 2′,’element 3’);
I am a jedi JVCL developer, and I have used JvDocking in my own commercial in-house projects, and found it to be solid and reliable. Also, it’s free. It’s easy to extend. It creates a look and feel about the same as visual studio 2008 era docking.
Ok. This is an old thread, but could do with some updating. I stopped using Delphi, maybe a decade ago, largely because I had no choice. Having spent 5+ years working as a Delphi coder, I was now a student again and the prices for Delphi were simply outrageous. The problem with Delphi was never … Read more
Double buffering and fancy drawing tactics are only half the story. The other half, some would argue the more critical half, is to limit how much of your control is invalidated. In your comments, you mention that you use RedrawWindow(handle, @R, 0, rdw_Invalidate or rdw_Frame). What are you setting the R rectangle to? If you … Read more
According to your needs, here are some guidelines: Make a distinction between language and library – you can have mathematical languages (like MATLAB) or mathematical libraries called from an high-level language (like Python); The language (or library) should be designed by mathematicians, for mathematicians; The used language should be an existing one (do not reinvent … Read more
You would need to use $IF instead: {$IF Defined(Condition1) or Defined(Condition2)} DoSomething; {$IFEND}
Look at indy IdURI unit, it has two static methods in the TIdURI class for Encode/Decode the URL. uses IdURI; .. begin S := TIdURI.URLEncode(str); // S := TIdURI.URLDecode(str); end;
In regular Delphi functions, the function return is actually a parameter passed by reference, even though syntactically it looks and feels like an ‘out’ parameter. You can test this out like so (this may be version dependent): function DoNothing: IInterface; begin if Assigned(Result) then ShowMessage(‘result assigned before invocation’) else ShowMessage(‘result NOT assigned before invocation’); end; … Read more