using uCalcSoftware;

var uc = new uCalc();
var infix_minus = uc.ItemOf("-", uCalc.Properties(ItemIs.Infix));
var prefix_minus = uc.ItemOf("-", uCalc.Properties(ItemIs.Prefix));

Console.WriteLine($"Operands for infix '-': {infix_minus.Count}");
Console.WriteLine($"Operands for prefix '-': {prefix_minus.Count}");