${i}
${len(users)}
姓名
年龄
${u.name}|||${len(u.name)}
${u.age}
姓名2
年龄2
${modOut("mod_index", "cls1", 2)}
${modOut("mod_index2", "cls2", 2, true)}
${increment("u_index", true)}|||${u_index}|||${u.name}|||${len(u.name)}
${u.age}
${mod_index}|${mod_index2}|${u_index} ${remove("mod_index", "mod_index2", "u_index")} after removing : ${mod_index}|${mod_index2}|${u_index}
${modOut("mod_index", "cls1", 3)}
${modOut("mod_index2", "cls1", 3, true)}