Demonstrates introspection within a callback, retrieving the parameter count of the calling function.

ID: 614

See: Count = [Int64] 
				
					using uCalcSoftware;

var uc = new uCalc();

static void ItemCallback(uCalc.Callback cb) {
   Console.WriteLine($"Function '{cb.Item.Name}' was called.");
   Console.WriteLine($"It is defined with {cb.Item.Count} parameters.");
}

uc.DefineFunction("MyFunc(x, y) As Double", ItemCallback);
uc.EvalStr("MyFunc(1, 2)");
				
			
Function 'myfunc' was called.
It is defined with 2 parameters.
Explore 600+ other examples
				
					#include <iostream>
#include "uCalc.h"

using namespace std;
using namespace uCalcSoftware;

void ucalc_call ItemCallback(uCalcBase::Callback cb) {
   cout << "Function '" << cb.Item().Name() << "' was called." << endl;
   cout << "It is defined with " << cb.Item().Count() << " parameters." << endl;
}
int main() {
   uCalc uc;
   uc.DefineFunction("MyFunc(x, y) As Double", ItemCallback);
   uc.EvalStr("MyFunc(1, 2)");
}
				
			
Function 'myfunc' was called.
It is defined with 2 parameters.
Explore 600+ other examples
				
					Imports System
Imports uCalcSoftware
Public Module Program
   
   Public Sub ItemCallback(ByVal cb As uCalc.Callback)
      Console.WriteLine($"Function '{cb.Item.Name}' was called.")
      Console.WriteLine($"It is defined with {cb.Item.Count} parameters.")
   End Sub
   Public Sub Main()
      Dim uc As New uCalc()
      uc.DefineFunction("MyFunc(x, y) As Double", AddressOf ItemCallback)
      uc.EvalStr("MyFunc(1, 2)")
   End Sub
End Module
				
			
Function 'myfunc' was called.
It is defined with 2 parameters.
Explore 600+ other examples