代表确实是您所需要的。在这种情况下，由于所有操作都在function fillAnyForm(selectors,values) { if(!isArray(selectors)) throw 'Parameter "selectors" must be an array' if(!isArray(values)) throw 'Parameter "values" must be an array' nPromises = Math.min(selectors.length,values.length) promises = [] for(let i = 0; i < nPromises; i++) { promises.push(new Promise(/* This is the part I don't get */)) } return Promise.all(promises); } 对象上操作并返回内容，因此您需要一个Car，其中Func<Car,Something>是Something的类型，而其他则返回：

Horn

您可以编写两个专门的操作，如下所示：

private void PerformOperation(Func<Car,Something> operation)
{
        var response = operation.Invoke(_car);
        if(response.Status != 0)
        {
            throw new Exception("Operation failed!");
        }
}

应该是

 private void PerformOperation(Func<int> operation)

您定义

 public void TurnOnHazarLights() => PerformOperation(()=>_car.ToggleHazards(true));
 public void SoundHorn() => PerformOperation(() => m_car.SoundHorn(100))

或将替换为您的Response类的类型。

也许我正在监督某些事情，但是为什么这样不起作用：

<div class="container holidayContent">
        <div class="row">
            <h1>Holidays</h1>
        </div>
        <div class="row">
            <?php
                $sql = "SELECT holiday.*,users.* FROM holiday INNER JOIN users ON holiday.user_id = users.user_id WHERE users.user_id = '" . $_SESSION['userId'] . "'";
                $result = $conn->query($sql);

                if ($result->num_rows > 0) {
                    // output data of each row 
                ?>

                <table class="table table-striped table-bordered table-hover" id="dataTables-example">
                    <thead>
                        <tr>
                            <th>Name</th>
                            <th>Start Date</th>
                            <th>End Date</th>
                            <th>Reason</th>
                            <th>Validated</th>
                        </tr>
                    </thead>
                    <tbody>
                    <?php while ($row = mysqli_fetch_array($result)) { ?>
                        <tr>
                            <td><?php echo $row['first_name'] . ' ' . $row['last_name']; ?></td>
                            <td><?php echo $row['start_date']; ?></td>
                            <td><?php echo $row['end_date']; ?></td>
                            <td><?php echo $row['reason']; ?></td>
                            <td><?php if ($row['validated'] == 0) {
                                echo '<a><i class="fas fa-check-circle"></i></a>';
                                echo '<a><i class="fas fa-times-circle"></i></a>';
                            } else if ($row['validated'] == 1) {
                                echo '<i class="fas fa-check-circle"></i>';
                            } else {
                                echo '<i class="fas fa-times-circle"></i>';
                            } ?></td>
                        </tr>
                    <?php } ?>
                    </tbody>
                </table>

                <?php } else {
                    echo "You have not asked for any days off.";
                }

                $conn->close();
                ?>
            </div>
        </div>

然后您将通过

private void PerformOperation(Func<Response> operation)
{
            var response = operation();
            if(response.Status != 0)
            {
                throw new Exception("Operation failed!");
            }
}