Where can I find KernelFunctionCombinators class?

[lallgaurav]

As per below code in one of your blog, we can pipe multiple functions. I'm unable to locate KernelFunctionCombinators, which Nuget package is it part of?

KernelFunction pipeline = KernelFunctionCombinators.Pipe([parseInt32, multiplyByN, truncate, humanize], "pipeline");

[stephentoub]

That's just a sample:

semantic-kernel/dotnet/samples/GettingStarted/Step8_Pipelining.cs

Lines 105 to 132 in 13e3a22

	public static KernelFunction Pipe(
	IEnumerable<KernelFunction> functions,
	string? functionName = null,
	string? description = null)
	{
	ArgumentNullException.ThrowIfNull(functions);
	KernelFunction[] funcs = functions.ToArray();
	Array.ForEach(funcs, f => ArgumentNullException.ThrowIfNull(f));
	var funcsAndVars = new (KernelFunction Function, string OutputVariable)[funcs.Length];
	for (int i = 0; i < funcs.Length; i++)
	{
	string p = "";
	if (i < funcs.Length - 1)
	{
	var parameters = funcs[i + 1].Metadata.Parameters;
	if (parameters.Count > 0)
	{
	p = parameters[0].Name;
	}
	}
	funcsAndVars[i] = (funcs[i], p);
	}
	return Pipe(funcsAndVars, functionName, description);
	}

But if you don't need the genericity of such a helper, you can of course just use imperative code to invoke the functions one after the other, using whatever control flow you want.

[lallgaurav]

Thanks Stephen for the prompt response. I thought there exist a class named KernelFunctionCombinators.