这比Resharper机器人更锐利吗?

时间:2015-01-08 23:02:59

标签: c# resharper null-check

Resharper改变了(当然我的批准):

private static Subdepartment GetSubdepartmentForXMLElement(XElement subdept)
{
    return new Subdepartment
    {
        Id = Convert.ToInt32(subdept.Element("Id")),
        AccountId = Convert.ToDouble(subdept.Element("AccountId ")),
        Name = subdept.Element("Name")
    };
}

......进入这个:

private static Subdepartment GetSubdepartmentForXMLElement(XElement subdept)
{
    var xElement = subdept.Element("Id");
    if (xElement != null)
    {
        var element = subdept.Element("AccountId");
        if (element != null)
        {
            var el = subdept.Element("Name");
            if (el != null)
            {
                return new Subdepartment
                           {
                               Id = Convert.ToInt32(xElement.Value),
                               AccountId = Convert.ToDouble(element.Value),
                               Name = el.Value
                           };
            }
        }
    }
}

...我必须添加:

return null;

...在倒数第二个大括号之后,允许它编译。<​​/ p>

我喜欢R#,但上面的代码看起来比我的一屁股贵了9倍;这不是一个更好的整合:

private static Subdepartment GetSubdepartmentForXMLElement(XElement subdept)
{
    var IdElement = subdept.Element("Id");
    var AccountIdElement = subdept.Element("AccountId");
    var NameElement = subdept.Element("Name");
    if ((IdElement != null) && (AccountIdElement != null) && (NameElement != null))
    {
        return new Subdepartment
        {
            Id = Convert.ToInt32(IdElement.Value),
            AccountId = Convert.ToDouble(AccountIdElement.Value),
            Name = NameElement.Value
        };
    }
    return null;
}

更新

我其实更喜欢这种&#34;风格&#34;由于某种原因:

var IdElement = itemGroup.Element("Id");
var item_group_idElement = itemGroup.Element("item_group_id");
var nameElement = itemGroup.Element("name");
if ((null == IdElement) || (null == item_group_idElement) || (null == nameElement)) return null;
return new ItemGroup
{
    Id = Convert.ToInt32(itemGroup.Element("Id").Value),
    item_group_id = itemGroup.Element("item_group_id").Value,
    name = itemGroup.Element("name").Value
};

1 个答案:

答案 0 :(得分:4)

此:

private static Subdepartment GetSubdepartmentForXMLElement(XElement subdept)
{
    return new Subdepartment
    {
        Id = Convert.ToInt32(xElement.Value),
        AccountId = Convert.ToDouble(element.Value),
        Name = el.Value
    };
}

......甚至没有编译。 <{1}},xElementelement未声明。

但是,resharper不应该抱怨这个:

el

Resharper代码更正一次只适用于一个问题,这就是为什么你最终得到OP中的嵌套混乱。如果您从一开始就仔细编写代码,则需要执行这些单一问题修复。

就个人而言,我更喜欢减少嵌套,并希望这样做更好一点:

private static Subdepartment GetSubdepartmentForXmlElement(XElement subdept)
{
    if (subdept == null) throw new ArgumentNullException("subdept");

    var idElement = subdept.Element("Id");
    var accountIdElement = subdept.Element("AccountId");
    var nameElement = subdept.Element("Name");

    if (idElement != null && accountIdElement != null && nameElement != null)
    {
        return new Subdepartment
        {
            Id = Convert.ToInt32(idElement.Value),
            AccountId = Convert.ToDouble(accountIdElement.Value),
            Name = nameElement.Value
        };
    }
    return null;
}

ReSharper也不会抱怨这个。