pan class="c1">// Fill the supplied buffer with the integer v converted to a string,
</span><span class="c1">// returning length of string minus null terminator
</span><span class="c1"></span><span class="n">outcome_e</span><span class="o">::</span><span class="n">status_result</span><span class="o">&lt;</span><span class="n">size_t</span><span class="o">&gt;</span> <span class="n">to_string</span><span class="p">(</span><span class="kt">char</span> <span class="o">*</span><span class="n">buffer</span><span