Content Guidance • Overview • What happens when you declare a variable behind it? • Heap and stack • Value types and reference types • What are value types and which are reference types? • Packing and unpacking • Performance issues in boxing and unpacking I. Overview This article describes six important concepts: heap, stack, value type, reference type, boxing, and unpacking. This article begins by explaining the changes that occur within the system after you define a variable, and then shifts the focus to the storage duo: Heap and Stack. After that, we'll look at value types and reference types, and give an explanation of the important basics of both types. This article uses a simple code to demonstrate the performance impact of the boxing and unpacking process, so please read it carefully. Second, what happens when you declare a variable? When you're in a. NET application, it allocates some memory blocks in RAM when a variable is defined. This memory has three things: the name of the variable, the data type of the variable, and the value of the variable. It simply illustrates what happens in memory, but what type of memory your variables will be assigned to depends on the data type. There are two types of memory that can be allocated in. NET: Stacks and heaps. In the next few parts
1. Talking about the core structure design of box packing and unpacking
Introduction: Content Guidance • Overview • What happens when you declare a variable? • Heap and stack • Value types and reference types • What are value types and which are reference types? • Packing and unpacking • Performance issues in boxing and unpacking I. Overview This article describes six important concepts: heap, stack, value type, reference type, boxing, and unpacking. This article begins by explaining the changes that occur within the system after you define a variable, and then shifts the focus to the storage duo: Heap and Stack. After that, we'll look at value types and reference types, and give an explanation of the important basics of both types. This...
2. In-depth understanding of Java native types and wrapper types
Introduction: This article deeply analyzes the Java native type and wrapper type, which mainly involves the following four aspects: primitive type and wrapper type Foundation, literal concept and kind, automatic transformation of basic type and forced transformation and automatic boxing and unpacking mechanism.
3. C # performance Optimization best Practices
Introduction: 1, the use of generics to avoid boxing, unpacking operations. The boxing operation can cause GC pressure, and if it occurs in the collection, it should be avoided using generic collections. For a collection of value types, use list instead of ArrayList, and dictionary instead of Hashtable. ArrayList h=new ArrayList (); H is not recommended. ADD (1); List h = new List (); Not recommended
4.. NET six key concepts: stacks, heaps, value types, reference types, boxing, and unpacking
Summary: This article describes six important concepts: heap, stack, value type, reference type, boxing, and unpacking. This article begins by explaining the changes that occur within the system after you define a variable, and then shifts the focus to the storage duo: Heap and Stack. After that, we'll look at value types and reference types, and give an explanation of the important basics of both types.
5. Basic knowledge of C # basics (19) Packing and unpacking of value types (ii)
Summary: If the code will cause the compiler to repeatedly boxing, can be changed to manual boxing, so that code execution faster, see the following code:
6. Basic knowledge of C # basics (18) packing and unpacking of value types (i)
Summary: It is interesting to know carefully about boxing and unpacking, first of all, why boxing and unpacking?
7. Basic knowledge of C # basics (Iliest) interface--Generics
Summary: For ArrayList if the insertion value type throws a boxing operation, and the value type is removed, the following
8. Generics in C # programming
Summary: One of the pitfalls of the. Net 1.1 release is that it does not provide support for generics. By using generics, we can greatly improve the reuse of code, but also get strong type of support, avoid implicit boxing, unpacking, to some extent, improve the performance of the application. This article will discuss generics for you in a systematic way, and we'll start with understanding generics.
9. Easy to learn C # boxing and unpacking
Introduction: Easy to learn C # boxing and unpacking, in the previous article simply mentioned the easy to learn C # boxing and unpacking, this article with everyone more detailed introduction easy to learn C # boxing and unpacking, interested in small partners can refer to
C # Packing and unpacking principles detailed
Introduction: This article through the legend mainly introduces the C # Boxing and unpacking principle, the content is very simple, interested in small partners can refer to
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