2</span>: <span class='ident'>Vec</span><span class='op'>&lt;</span><span class='ident'>i32</span><span class='op'>&gt;</span>) <span class='op'>-&gt;</span> (<span class='ident'>Vec</span><span class='op'>&lt;</span><span class='ident'>i32</span><span class='op'>&gt;</span>, <span class='ident'>Vec</span><span class='op'>&lt;</span><span class='ident'>i32</span><span class='op'>&gt;</span>, <span class='ident'>i32</span>) {
    <span class='comment'>// v1とv2についての作業を行う</span>

    <spa