!752

static PersistentMap<S, S> cache;

p {
  cache = new PersistentMap("cache");
}

answer {
  if "spell *" exceptionToUser {
    S n = m.unq(0);
    if (isInteger(n)) {
      S val = cache.get(n);
      if (val != null) ret val;
      
      S html = loadPage("https://www.ego4u.com/en/cram-up/vocabulary/numbers/generator?param=" + n + "&show=Show");
      L<S> tok = htmlcoarsetok(html);
      int i = 0;
      while (i < l(tok) && !tok.get(i).startsWith("cardinal number "))
        i += 2;
      i = indexOf(tok, "<li>", i);
      
      if (i >= 0) {
        val = tok.get(i+1);
        cache.put(n, val);
        ret val;
      }
    }
  }
  
  if "fill spell numbers cache *" {
    int max = min(m.psi(0), 1000), made = 0;
    for (int i = 0; i < max; i++)
      if (cache.get(str(i)) == null) {
        askSelf("spell " + i);
        ++made;
      }
    ret "OK, made numbers up to " + max + " (" + made + " new). Cache size now: " + cache.size();
  }
}