f5 note

[C ++ Note] 1. Data Type and type conversion. Note: Data Type How to select a type 1) when the value cannot be negative, select the unsigned type. 2) When the value exceeds the int value range, use long. 3) do not use char or bool in arithmetic expressions. They are used only when strings or boolean values are stored. Because the char type is signed in some machines, and the char type is unsigned in other m

Result learning Note (iii) results set with parameters Part one: codeFront web.xmlClass Pack Package Com.struts2.user.action;import Com.opensymphony.xwork2.actionsupport;public class Useraction extends actionsupport {private int type;public int GetType () {return type;} public void SetType (int type) {this.type = type;} @Overridepublic String Execute () throws Exception {return "Success";}}Show Part II: Analysis1.2.Objective:Constructs a user Action o

PHP Learning Note 1-constants, functions, PHP learning Note 1-constants Constants: Use const (PHP5) Declaration, can only be assigned once, PHP5 the following versions use define; 1 PHP2const the_value = 100; // only const in PHP5 3 Echo The_value; 4 5 Define (' The_value ', 200); // older versions below PHP5 can be used define 6 Echo The_value; Function: A code block that wraps a lot of functions;

Refactoring note-the bad taste of the Code (below), refactoring the taste of the note code This article is in the study of the summary, welcome to reprint but please note the Source: http://blog.csdn.net/pistolove/article/details/42083495 In the refactoring note-the bad taste of the Code (I), 11 of the 22 bad tastes a

Practice Note-the non-Hash object in python is set to a hash object, note-python Before this article, I have translated the official python3.3 hashable object document. You can refer to it first: Practice Note-what is a hash object in python? What is hashable object in python? Prerequisites: When defining a class, if we need to rewrite the _ eq _ function of the

Python feature note (1): python feature note 1. constructor and destructor 1. python has constructor and destructor, which are the same as other languages. If the subclass needs to use the constructor of the parent class, it needs to be explicitly called in the constructor of the subclass. If the subclass has its own constructor, the constructor of the parent class is not automatically called. However, fo

The Charm Blue Note adopts the integrated fuselage design, the card slot is located on the right side of the fuselage, needs to use the Kari that takes out the card slot, then completes the SIM card installment. Therefore, the Charm Blue Note installs the SIM card the first step, is uses the card needle to remove the card slot, as shown in the following figure. Charm Blue

asp.net in developing a asp.net system, often need to customize their own browser menus, toolbars. In a recent project, there is an opportunity to take charge of this part. The menu is Aspnetmenu, it seems not very stable, and the page refresh is

1. We first Baidu search "Millet" website and then entered the official website to find "red rice"-"Red Rice note" Item Click to enter the following image 2. Then we will see in the upper right corner of a "to the QQ space to make an appointment" button click to enter the following figure shown. 3. Use QQ number or Millet account login, you can get the Red meter note booking code. 4. If you have th

First, the reservation millet note must go to the official website, Millet official website for mi.com, we opened the browser after the discovery of Millet note, then click on the "Reservation Millet note", details as shown in the picture. Second, then open the Millet Note reservation interface, click on the

create a new partition, or select a good letter, click "Create." You can drag the letter as shown in the following illustration: After the "New size", enter the capacity you want in the FAT32 format. Store photo song is this section, the equivalent of your phone's original memory card part. Small series of SD card is 16GB, so FAT32 divided into 8G image of the red part is to format the FAT32 partition created, the remaining blue part is the following to create the E

SQL Server data insertion performance note, SQL Server Insert NOTE I haven't paid much attention to SQL Performance for a long time. Because the recent project neither has tens of millions of massive data nor has too many performance requirements, it does not have to work hard on performance. However, I spoke about the program as soon as I talked with my friends about it. He said that he used Delphi to impo

PHP Learning Notes (iii): Data type conversions and constants introduction, Learning Note constants One, PHP data types convert each other 1. Forced conversionCopy the Code code as follows:Bool,int,float,string,array,object,nullBOOL Settype (mixed $var, string $type)1) Change the type of the original variableCopy the Code code as follows:$a = "123a"; StringSettype ($a, "int"); Do not omit double quotesVar_dump ($a);2) defined before assignment, does

Symptom Composite sap Note: bapis and idocs for the AC Interface This note answers frequently asked questions regarding: Bapi documentation The business transaction Concept Enhancement of the interfaces (SAP and customer) The importance of the parameter obj_type (reference transaction) Navigation between the parameters (parameters obj_key and obj_sys) Summarization of documents in FI and CO

151 suggestions for improving java programs-Note 1, java151-Note I. common methods and guidelines for Java Development 1. do not contain confusing letters in constants and variables. Eg: long I = 1l. Is this 11 or lL? We recommend that you use uppercase letters; 2. Do not change constants into variables. Eg: public static final int RAND_CONST = new Random (). nextInt (); 3. The three element types must be c

Git branch learning note and git branch note Introduction After two times of Git content, I forgot the concept of branch in the next day and thought it was not very useful. Then I read it again to find out why it is an extremely important thing in Git. The so-called branch is similar to the branches of a tree. It has a trunk and becomes a master in Git, which is also easy to understand. This must exist, the

[IOS] File Upload note, ios note The APIS provided by the system can be used in iOS to upload and download files in two ways.NSURLConnectionAndNSURLSession. NSURLConnection is a method that has been in use for a long time, And NSURLSession is a new method. I. POST upload By default, the POST method uses: * Content-Type: application/x-www-form-urlencoded. * to input Chinese characters, the post method is au

Leetcode Note: 3Sum, leetcode note 3sum I. Description Ii. problem-solving skills This question is similar to the Two Sum of another question. However, this question is used to search for three numbers in the array so that the Sum is 0. At the same time, it is required that the three numbers only appear once. If we only need to use the brute force algorithm, the time complexity is O (n ^ 3), and it is dif

Python study note 5, functions and their parameters, and python learning note Functions How to customize a function in Python: The format is def function name (function parameter ): Content After writing a function in interactive mode, press ENTER twice to return >>> Pass is used as a placeholder for a function that is null (which means nothing is done). That is to say, if you don't want to write any funct

[Code Note] Some functions used to judge the iphone, take note of the iphone Code: # Import "RootViewController. h "// Add the header file # import" sys/utsname. h "@ interface RootViewController () @ end @ implementation RootViewController-(id) initWithNibName :( NSString *) bundle :( NSBundle *) handle {self = [super initWithNibName: nibNameOrNil bundle: nibBundleOrNil]; if (self) {// Custom initializatio