You don’t need to use external libraries to perform a JSONPath search. Example with Delphi 10 Seattle: uses System.JSON; procedure ParseJSonValue; var JSonValue:TJSonValue; st:string; Branch: string; begin st := ‘{“data”:{“results”:[{“Branch”:”ACCT590003″}]}}’; JsonValue := TJSonObject.ParseJSONValue(st); Branch := JsonValue.GetValue<string>(‘data.results[0].Branch’); JsonValue.Free; end;
Interesting question! You can declare attributes on almost anything, the problem is retrieving them using RTTI. Here’s a quick console demo of declaring custom attributes for: Enums Function type Procedure type Method type (of object) Aliased type Record type Class type Record type that’s internal to a class Record field Record method Class instance field … Read more
TMonitor combines the notion of a critical section (or a simple mutex) along with a condition variable. You can read about what a “monitor” is here: http://en.wikipedia.org/wiki/Monitor_%28synchronization%29 Any place you would use a critical section, you can use a monitor. Instead of declaring a TCriticalSection, you can simple create a TObject instance and then use … Read more
You create a named Mutex when you start the application. Check GetLastError to see if an other instance is already running. Put this code right after “begin” in your DPR file. Replace the GUID with one of your own. When I need a text constant that’s unlikely to be used for anything else, I usually … Read more
The only real problem is conversion to Unicode. You should learn how Unicode support is implemented in Delphi – start from Marco Cantu White Paper: Delphi and Unicode It is impossible to estimate the amount of work required to upgrade old applications to Unicode without knowing the actual code. If you were using string types … Read more
Debug info isn’t present in the file. Make sure that you’re using the Debug configuration. (Project Manager tree, expand Build Configurations, make sure Debug is bold. If it’s not, right click Debug and choose Activate from the context menu.) Make sure you then do a Build of your project, not just a Compile. If that … Read more
Well, it’s hard to be sure without a lot of testing, but it certainly looks like this is a bug, either in TThreadedQueue or in TMonitor. Either way it’s in the RTL and not your code. You ought to file this as a QC report and use your example above as the “how to reproduce” … Read more
The code in the question produces the expected output in XE2 update 4. Note that update 3 produces the bad output and so clearly the fix arrived with update 4. Also, XE3 produces the expected output.
I have posted the complete set of demos for SOAP on CodeCentral as item 28789. These contain every single one of the Delphi 2007 era SOAP demos from the WebServices folder, now updated for Delphi XE and XE2, including converting the old WAD servers into new INDY VCL servers. You’d think that was impressive, except … Read more
Delphi generates the entire dproj content itself and this custom import will always be deleted. You could write your own msbuild xml files but the dproj belongs to Delphi. Unless you have source code or are willing to monkey patch the ide you cant do that. If you really want a flexible xml way to … Read more