static void train(string[] args)
{
var a = new Args();
a.ParseArgs(args);
var fasttext = new FastText();
var outputFileName = a.output + ".bin";
var ofs = new FileStream(outputFileName, FileMode.CreateNew, FileAccess.Write);
if (!ofs.CanWrite)
{
throw new ArgumentException($"{outputFileName} cannot be opened for saving.");
}
ofs.Close();
fasttext.Train(a);
fasttext.SaveModel(outputFileName);
fasttext.SaveVectors(a.output + ".vec");
if (a.saveOutput)
{
fasttext.SaveOutput(a.output + ".output");
}
}