Is there a way to count the number of open tabs?

Question

I want to make a conditional bind for q
If tabcount is greater than or equal to 1, nnoremap <silent> q :tabclose<CR>
Else nnoremap <silent> q :qa<CR> (or quit or what have you)

Answer 1

Yes, there is tabpagenr(). There is always at least one tab so, "greater than or equal to 1" is always true.

nnoremap <silent> q : if tabpagenr('$') > 1
                  \ |     tabclose
                  \ | else
                  \ |     quit
                  \ | endif<cr>

However, that's literally the behaviour of :quit.