vb.net - 在 vb.net 中，感叹号(!)运算符用于数字，它有什么作用？

Question

我正在查看继承的代码，并在 vb.net windows 窗体中找到了它:

New System.Drawing.SizeF(6.0!, 13.0!)

我的问题是，这里的!(感叹号)运算符有何意义？我对感叹号运算符的大部分搜索最终都会返回记录集格式，或者 ! 在搜索中被忽略，并且我得到了数百个不相关的项目。

Answer 1

它强制文字为 Single。

Visual Basic 支持Type Characters :

In addition to specifying a data type in a declaration statement, you can force the data type of some programming elements with a type character. The type character must immediately follow the element, with no intervening characters of any kind.

和:

Literals can also use the identifier type characters (%, &, @, !, #, $), as can variables, constants, and expressions. However, the literal type characters (S, I, L, D, F, R, C) can be used only with literals.