Method writeTree

Experimental/KeyTree.cc:52–62

        { }

        alloc_slice writeTree() {
            auto n = _strings.size();
            size_t totalSize = 1 + sizeKeyTree(0, n);
            alloc_slice output(totalSize);
            _out = (uint8_t*)output.buf;

            writeByte((uint8_t)ceil(log2(n)));   // Write the depth first
            writeKeyTree(0, n);
            assert_postcondition(_out == output.end());
            return output;
        }

    private:
        const std::vector<slice> &_strings;