JetBrains Rider IDE issue

Question

附录二

public SomeClass(string a, Color? c = null, Font d = null)
        {
            // ...
        }

public SomeClass(string a, Font c = null, Color? d = null)
        {
            // ...
        }

我这样做:

SomeClass sc = new SomeClass("Lorem ipsum");

I ll get this: "Error 1 The call is ambiguous between the following methods or properties [...]"

在我看来,我指的是什么时候了,因为最终结果相同(至少就这一具体情况而言,对我来说,现在所有事情都如此),所以我可以选择什么来解决这一问题?

EDIT 1: @oltman: Simplified example.

I just want to be able to write

[...] new SomeClass("Lorem", Color.Green)

instead of

[...] new SomeClass("Lorem", null, Color.Green)

Answer 1

两名施工人员都持有相同数目的论点,但顺序不同。由于你确定了两个构造参数的缺省值,汇编者不能区分两个超载体,而第二个论点没有提供。

I would advise you to remove the existing constructors and replace with the following:

public SomeClass(string a, Color? color, Font font)
{
    // constructor implementation
}

public SomeClass(string a) : this(a, null, null) {}
public SomeClass(string a, Color color) : this(a, color, null) {}
public SomeClass(string a, Font font) : this(a, null, font) {}

Answer 2

强迫它工作的一种方式:

SomeClass sc = new SomeClass("Lorem ipsum", (Color?)null, (Font)null);

Answer 3

这是anti-pattern的一个完美例子,避免这种情况的最佳途径是@Phil Klein。

这里是另一条yn子,其穿过等级为:

SomeClass sc = new SomeClass("Lorem ipsum", null as Color, null as Font);

Answer 4

JetBrains Rider IDE issue

在我最近的案件中,JetBrains Rider在<代码>项目_名上添加了提及<代码>的项目_ 姓名/代码>的内容,其中产生了自我参照,并造成不时出现的错误:

<ItemGroup>
  <Reference Include="[project_name]">
    <HintPath>[path_to_dll_file]</HintPath>
  </Reference>
</ItemGroup>

The solution was to just revert this addition.

Answer 5

Can you create another constructor that takes just the string, and update the above constructors to make their second parameters mandatory?

如果主意是,你可以总是提供大体,然后是选择性地提供彩色或双体,从而构造这个物体,那么:

public SomeClass(string a)
        {
            // ...
        }

public SomeClass(string a, Color? c)
        {
            // ...
        }

public SomeClass(string a, Font f, Color? d = null)
        {
            // ...
        }

Answer 6

下面的意思是:“......在以下方法或特性之间,这种呼吁含糊不清......”

在我看来,我指的是什么时候了,因为最终结果相同。

电话is含混。每个建筑师都是独一无二的,如果他们创建并返回一个榜样,就不成问题,因为每个建筑商可能有不同的逻辑。汇编者仍然不知道你指的是什么。

Answer 7

I encountered this issue after installing the PnP.Framework, the replacement for SharePointPnPCoreOnline

我从项目档案中安装的SongPointPnPCoreOnline被搁置,试图清理,然后制造错误。

I hope this helps readers out there who will encounter the same issue as mine

Answer 8

Sometimes this error could be reported by an extension of your IDE such as OmniSharp,
even though your code compiles / is correct.
This was my case. I restarted it and the false-positive error went away.

JetBrains Rider IDE issue

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