nullable type 中文意思是什麼
nullable type
解釋
可為 null 的型別-
Nullable type can contain three different values
可空類型可以包含三個不同的值: -
The most important members of a nullable type are its
可空類型的最重要成員是它的 -
The default value for a nullable type variable sets
可空類型變量的默認值將 -
Is nullable, whereas a value type such as
的引用類型就是可空類型,而類似 -
The nullable type modifier enables c to create value - type variables that indicate an undefined value
可空類型修飾符使c #能夠創建表示未定義值的值類型變量。 -
Including the numeric types as well as the struct type and the nullable type, are all value types
(包括數值類型以及結構類型和可空類型)都屬于值類型。 -
Nullable booleans are similar to the boolean variable type used in sql
可空布爾值類似於sql中使用的布爾變量類型。為了確保 -
For an example of when you might use a nullable type, consider how an ordinary boolean variable can have two values : true and false
有關可能使用可空類型的示例,請考慮普通的布爾變量如何能夠具有兩個值: true和false 。 -
You can declare procedures with nullable types as parameters, and you can return a nullable type from a
可以用可空類型作為參數來聲明過程,也可以從 -
The nullability property of arithmetic operators over floating point data type is always nullable
對浮點數據類型執行運算的算術運算符的為空性屬性始終可為空。 -
A nullable type can contain a value, or it can be undefined. the
可空類型可以包含值,或者可以是未定義的。 -
The conversion from an ordinary type to a nullable type, is implicit
從普通類型到可空類型的轉換是隱式的。 -
Boxing a non - null nullable value type boxes the value type itself, not the
如果將非空的可空值類型裝箱,將使值類型本身(而不是包裝該值類型的
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