public static TRet Calculate(string text, string name, Func <ROMol, TRet> calculator)
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
var key = new Tuple <string, string>(name, text);
var nReturnValue = ValueCache.GetOrAdd(key, tuple =>
{
var mol = Parse(text);
return(calculator(mol));
});
return(nReturnValue);
}