I've been reading the tutorial on templates and found this example:
template rank(T) { static if (is(T t == U[], U)) // is T an array of U, for some type U? enum rank = 1 + rank!(U); // then let’s recurse down. else enum rank = 0; // Base case, ending the recursion. } TDPL never mentions the use of a comma operator inside an is expression. Is this an undocumented feature? Also the symbol 't' is never used, but if I remove it, it won't compile. It's a really good tutorial, but I find this particular example puzzling. Jos