/// <summary>
/// TODO make this closer to original code
/// </summary>
/// <param name="number"></param>
/// <returns></returns>
private int FactorialByStrongRecursion(int number)
{
var answer = new RecursionBuilder <FParams, FResult>()
.If((p) =>
{
return(p.n == 0);
})
.Then((p, r) =>
{
return(new FResult()
{
result = 1 * r.result
});
})
.Else((p, r) =>
{
return(new StackFrame <FParams, FResult>()
{
Params = new FParams {
n = p.n - 1
},
Result = new FResult {
result = p.n * r.result
}
});
})
.Build()
.Run(new FParams {
n = number
});
return(answer.result);
}
private int StrongRecursion(int input)
{
var builder = new RecursionBuilder <DemoParams, DemoResult>()
.If((p) =>
{
// Custom predicate for limiting condition by user
return(p.N == 1);
})
.Then((p, r) =>
{
// Custom logic by user
return(new DemoResult()
{
Res = 1 + r.Res
});
})
.Else((p, r) =>
{
// Custom logic by user
var inputParams = (DemoParams)p;
var prevResult = (DemoResult)r ?? new DemoResult();
return(new StackFrame <DemoParams, DemoResult>()
{
Params = new DemoParams()
{
N = inputParams.N - 1
},
Result = new DemoResult()
{
Res = inputParams.N + prevResult.Res
}
});
});
var recursion = builder.Build();
var result = recursion.Run(new DemoParams()
{
N = input
});
return(result.Res);
}