Print spaces between each element using a fold expression

Question

I am using a fold expression to print elements in a variadic pack, but how do I get a space in between each element?

Currently the output is \"1 234\", the desired outpu

Answer 1

You can reuse print() to achieve this behaviour. Afterall you are doing a fold operation which is by definition resursive.

Live Demo

template

struct List
{
    static void print_()
    {
     std::cout<::print();

    }
};

If you want to process many elements this way you might run into problems with template depth (gcc for instance has a limit of 900). Lucky for you you can use the -ftemplate-depth= option to tweak this behaviour.

You can compile with -ftemplate-depth=100000 and make it work. Note that compilation time will skyrocket (most likely) or in thhe worst case you run out of memory.