引用类型(reference type):它存放的值是指向数据的引用(reference),而不是数据本身。示例: System.Text.StringBuilder sb = new StringBuilder(); 这里,我们声明一个变量sb,并通过new StringBuilder()创建了一个StringBuilder(与Java中StringBuffer类似)对象,再将对象的引用 (
比如所有的数值类型和boolean类型都是value types,但是值得注意的是, System.String is a reference type. That Stated, in the CLR, System.String objects are immutable and cannot be changed after they are created. This makes System.String act much more like a value type than a reference type.System...
Boolean, Char, and Date All structures, even if their members are reference types Enumerations, since their underlying type is always SByte, Short, Integer, Long, Byte, UShort, UInteger, or ULong Every structure is a value type, even if it contains reference type members. For this reason...
你可以说是 reference type vs value type 的区别。但其实精确一点, Python 本身是只有 reference type,区别只是这个 reference type 是可变还是不可变的。 我感觉 SO 上面的一些回答也很有启发,比如: This is a long-winded way to say that when people call integers "value types" in Python they are prob...
Boolean,Char, andDate All structures, even if their members are reference types Enumerations, since their underlying type is alwaysSByte,Short,Integer,Long,Byte,UShort,UInteger, orULong Every structure is a value type, even if it contains reference type members. For this ...
C#中有两种数据类型:值类型(value type)和引用类型(reference type)。 值类型的变量直接包含它们的数据,而引用类型的变量存储对它们的数据引用,后者称为对象。对于引用类型,两个变量可以引用同一对象,因此对一个变量操作可能影响另一个变量所引用的对象。对于值类型,每个变量都有它们自己的数据副本(除 ref 和 out ...
Use a value type when: Comparing instance data with==makes sense You want copies to have independent state The data will be used in code across multiple threads Use a reference type (e.g. use aclass) when: Comparing instance identity with===makes sense ...
Size s =newSize (100, 100);// struct = value type Font f =newFont (“Arial”,10);// class = reference type and we’ll also create a form.Formis a class inSystem.Windows.Formsnamespace, and is hence a reference type: Form myForm =newForm(); ...
Discover value types and reference types200 XP 8 minutes With many data types available in C#, choosing the right one to use means that you need to understand when you might choose one data type over another. Before discussing why you might choose one data type over another, you need to ...
Value typesandreference typesare the two main categories of C# types. A variable of a value type contains an instance of the type. This differs from a variable of a reference type, which contains a reference to an instance of the type. By default, onassignment, passing an argument to a ...