difference between iwatch 1 and 2

- whilejLen (b): + c.append (B[j]) AJ=j+1 at Print(c)View CodeThe result of the output is:Sorted a= [1, 2, 3, 4, 5, 7, 9, 11, 17, 19]Sorted b= [1, 2, 4, 5, 6, 8, 10, 12, 14, 15, 16, 22]The numbers which is in List B and not in List a include:[6, 8, 10, 12, 14, 15, 16, 22]C

Tags: unable to images creat upd introduction logs question purge SRC1. The difference between count (1), COUNT (*), and count (column name)Believe that you are always at work, or in the study of Count () in the end how to use faster. There has been a lot of doubt, some people say that count (*) faster, some people say count (column name) faster, that is who is faster, I will detail in this article is count

1) layer-2 Exchange Technology The layer-2 switching technology is relatively mature. The layer-2 switch is a data link layer device that can identify MAC locations in data packets.Address information, which is forwarded based on the MAC address, and the corresponding MAC addresses and ports are recorded in a local loc

/// ///Find the difference set of 2 sets/// Public classWage { Public Static voidTest () {ListNewList { NewWage {Id =1, Name ="List1" }, NewWage {Id =2, Name ="List1" },

See this topic you may guess what I want to say next, oh, yes, that is the list of these two different versions of the But not! You'll find that Python has two major versions, Python2 and Python3, but Python is different from other languages, backward-compatible, and Python3 is backward-compatible, but most of the components and extensions are based on Python2, Here's a summary of the difference between Python2 and Python3.

the difference between Python 2 and Python 3 recently began to learn Python, the process of continuous learning to the difference between the two, in order to facilitate the review, so write here, the content will be constantly updated 1, Encoding: Python2 's default encoding is ASCII, so the default is not supporte

Reference is a great tool to improve the efficiency of code, especially for objects, when referenced as a parameter without the large area of the copy object itself caused by the space and time wasted. So sometimes we want to return a reference to a parameter for the return value of the parameter. Here we recall that the C function returns local variables to the attention of the aspects, you can also see my article. Let's discuss the function return reference or non-reference in C + +!!

Difference between exit return (2) and exitreturn1. return returns the function value, which is a keyword; exit is a function.2. return indicates the language level, which indicates the return of the call stack, and exit indicates the system call level, which indicates the end of a process.3. return indicates the exit of the function (return); exit indicates the

files" and "included files" are in the same folder as the root directory named folder, then Virtual= "folder\file.asp" is OK, and file= "folder\file.asp" is wrong. If a site has 2 folders under Folder1 and Folder2,folder1 files under File1.asp,folder2 file file2.asp, if file1.asp to invoke File2.asp, Then you can write this in file1.asp: In this case, using the In the course of use, pay attention to the following points: Whether using #incl

impending operation;We use a typical case to differentiate between them and create a new trigger:#监视地点: Product Table O#监视事件: Insert#触发时间: Before#触发事件: UpdateCase: When a new order record is added, the number of items in the order is judged, if the quantity is greater than 10, the default is changed to 10Create Trigger Tg6Before insert on OFor each rowBeginIf New.much > ten ThenSet New.much = 10;End If;Update g Set num = Num-new.much where id = new.gid;end$After execution, delete the previously

configuration. While JavaScript is interpreted to perform without generating intermediate files, "read a sentence, execute a sentence", the execution can generally be done in three ways:1. The general browser comes with the JS interpreter, which can be used directly by the browser;2. Special interpreter software can be installed node. js, executing the. js file;3. Executed with the Web page, using the Thir

, Boolean AutoFlush)Create a new printwriter from the existing outputstream. PrintWriter (String fileName)Creates a new printwriter with the specified file name without automatic row refresh. PrintWriter (String fileName, String CSN)Creates a new printwriter with the specified file name and character set without automatic row refresh. PrintWriter (Writer out)Creates a new printwriter with no automatic row refresh. PrintWriter (Writer out, B

Shallow copyFirst, let's look at the following code:11 >>> names = ["maqing","Peilin","xiaoming","Lilei","Hanmeimei",["maqing","Wangchuan","Lilong"]]22 >>> names2 =names.copy ()33 >>>Print(names)43 |'maqing','Peilin','xiaoming','Lilei','Hanmeimei', ['maqing','Wangchuan','Lilong']]55 >>> names[2] ="Xiao Ming"67 >>>Print(names)78 ['maqing','Peilin','Xiao Ming','Lilei','Hanmeimei', ['maqing','Wangchuan','Lilong']]89 >>>Print(Names2)910 ['maqing','Peilin'

The difference between Select count (*) and Count (1) in SQL server and the execution method, selectcount In SQL Server, Count (*), Count (1), or Count ([column]) is perhaps the most common aggregate function. Many people cannot tell the difference between the three. This article will explain the functions, relationshi

Second, in which case the release version will be wrongWith the introduction above, let's take a look at each of these options to see how the release version of the error was generated.1. Runtime Library:2. Optimization: This type of error mainly includes the following types:(1) Frame pointer (frame Pointer) ellipsis (abbreviated to FPO): All call information dur

AIn general, select COUNT (*) and select COUNT (1) both return the same resultIf the table does not have a primary key (Primary key), then count (1) is faster than COUNT (*),If there is a primary key, the primary key is the fastest when the condition of Count is the count (primary key)If your table has only one field, then count (*) is the fastestCount (*), like the result of Count (

Requirement: This blog is used to explain the difference between i++ and ++i.Process:1. Name explanation+ +: Self-increment, that is, on the basis of the original data +1, and then to the original data.2. Program Demonstration(1) Code:1