types of inheritance in c

Original address: http://www.cnblogs.com/huamingao/p/5809936.htmlmutable type Vs Immutable typemutable type (mutable): list, dictionaryImmutable types (unmutable): Numbers, strings, tuplesThe immutable variable here refers to whether the contents of the memory (value) can be changedCode:name1='Wupeiqi'name2=name1Print("name1:%s\nname2:%s"%(name1,name2)) name1='Alex'Print("I have assigned new value to name1. Let's see how happens to name2!")Print("name

1. The base type can be passed only by value, and the encapsulated class corresponding to each base type is passed by reference. 2. the basic type in Java in terms of performance is created on the stack, and all object types are created on the heap (the object's reference is created on the stack). Like what Integer i=new integer (10); Where the new Integer () is created on the heap, and his reference Integer I is on the stack. Encapsulation classes

1, the computer's memory unit The data in the computer is represented by 0 and one, and one of the 0 or 1 is called a bit. 8 bits are called a byte (byte), two bytes are called a word (word), and four bytes are called two-word (Dword). 1byte=8bit, 1kb= 1024 Byte, 1m=1024 KB. 2, Java has four categories of 8 basic types A, 4 kinds of integral type BYTE 1 byte Short 2 bytes int 4 bytes Long 8 bytes B, 2 kinds of floating-point

In C #, value types and reference types are two very important concepts that must determine the behavior of a type instance when designing a type. If you do not understand the differences between reference types and value types when writing code, you will introduce unnecessary exceptions to your code. Many people simpl

Introduction to the Delphi Variant type (variant) (Flow vs. Variant types, functions commonly used for variant types)first, the variant types commonly used functions are described:Variant: One can have a variety of data types, you can also tell what type of data is currently stored (by using the VarType function), you

1. Data of value type is stored in the stack of memory, the data of the reference type is stored in the heap of memory, and the memory unit only holds the objects in the heap.Address.2. Value type access speed is fast, reference type access speed is slow.3. Value types represent actual data, and reference types represent pointers or references to data stored in the memory heap4. Value

In day2 java, variables and data types and types are converted. In day2java Identifier: Any place that can be named by yourself is called an identifier, such as the class name, method name, and interface name... 1. Naming rules for identifiers:It consists of 26 English letters (uppercase and lowercase), 0-9, _, or $. If you do not comply with the conditions, an error is returned.It cannot start with a numbe

Basic types and reference typesECMAScript contains two different types of values: primitive type values and reference type values. A primitive type value refers to a simple data segment; A reference type value refers to an object that consists of multiple values. When we assign a variable to a variable, the first thing the parser does is to verify that the value is a base type value or a reference type valu

The ECMAScript variable may contain values for two different data types: the base type value and the reference type value. A primitive type value refers to a simple data segment, whereas a reference type value refers to an object that may consist of multiple values.When assigning a value to a variable, the parser must determine whether the value is a base type value or a reference type value. The 3rd chapter discusses 5 basic data

First throws a question, Ali's written test surface question (very basic, but is actually Ali's written examination question)var a = {"X": 1};var B = A;a.x = 2;A = {"X": 3};Console.log (b.x);What do you think the final result in the console output is?If your answer is 2, then you don't need to go. If not. Then you can continue to look to solve your doubts!Value types and reference types in JavaScriptIn Java

The CLR supports two types: reference types and value types.Reference types are always allocated from the managed heap, and value types are typically allocated on the thread stack.As noted in the. NET Framework SDK, any type called a class is a reference type, and all value types