[Reading Notes] iOS-MVC, Reading Notes ios-mvc
Each user's Action is transmitted to the Controller in the form of a View Action, and then the Controller sends a message notification Model to handle the logic of the response, when the business logic processing at the Model level has the result, the Model will be able to know the Controller in the form of Notification. after receiving the notification, the C
Objective java Reading Notes the first consideration is to use the static factory method instead of the constructor. Objective Reading Notes
For a class, the most common method for clients to obtain a senior instance is to provide a common constructor. There is also a way to release your hair, and you should also have a place in the toolbox of every programmer. Class can provide a common static factory meth
Special attention should be paid to reading and modifying the prototype in javascript, because the reading and writing of the prototype is not equivalent, and the javascript prototype
For members inherited from prototype objects, the read and write operations are inherently unequal. For example, assume that the prototype object of object A is B, and the prototype object of object B is null. If we need to re
SQL query beginner's Guide Reading Notes (3) value expression introduction, beginner's Guide Reading Notes
CHAPTER 5 Getting More Than Simple Columns
Intro Value expression, itcontains column names, literal values, functions, orother value
Expressions
The type of data
TheSQL Standard defines seven general categories of types of data-character,
Nationalcharacter, binary, numeric, Boolean, datetime, and in
HTML5 authoritative guide Reading Notes (Part 2): html5 authoritative Reading Notes1. hyperlink href support format: http https ftp mailto (mailto: adam@mydomain.com) 2. hyperlink # id move the element of the specified id into the field of view, if not, search for name matching. 3. The regular forms of B and strong are both bold, but B does not represent important semantics in html5, strong 4. Use of wbr wh
[Reading Notes] iOS-handle memory warnings, Reading Notes ios-warning
-(Void) didReceiveMemoryWarning {
[Super didReceiveMemoryWarning];
}
Here, you need to release all objects that occupy a large amount of memory. If you ignore this warning, the application may crash directly. IOS devices do not have virtual memory or swap partitions. When memory is used up, it is actually used up and there is no room
[Reading Notes] iOS-attributes, Reading Notes ios-
Assign: simple assignment.
Retain: After a value is assigned, the new retain method and the release method of the old value are called.
Copy: copy the value first, and assign the copy value to the instance variable. This modifier is only applicable to the NSCopying protocol.
Weak: indicates that the value of this attribute will be a weak reference, and
[Reading Notes] iOS-strong and weak types, Reading Notes ios-type
Id is a common type. OC uses id to represent any type of objects. It can be used as a placeholder to indicate that this is an uncertain type object or reference. Therefore, all objects can be represented by IDs. This is very useful. Imagine that if you need to implement a common linked list class, you can declare the data field type in the l
[Reading Notes] iOS-Automatically releases the pool and Reading Notes ios-
When you use classes in the Foundation framework for more program processing, you need a more flexible memory management mechanism, that is, to use the memory release pool. The memory release Pool provides an object container. Every time an object sends an aotuorelease message, the reference count of the object does not actually cha
Regular Expression BASICS (Reading Notes), regular expression Reading Notes
A regular expression (regex) is a tool.
Two basic functions of a regular expression: search and replace.
. Character (English period) can match any single character. (. Characters can match any single character, number, letter, or even. character itself .)
\ Escape character. This is a metacharacter, which indicates that this chara
SVM recommended reading literature and blog, SVM reading literature blog
SVM is a classic classification algorithm. There are many wonderful blog posts and books on the Internet. Today I will summarize these materials and thank you for sharing them!
[1] The author of JerryLead's blog gave a smooth and popular derivation based on Stanford's handouts: SVM series.
[2] Jia shiber's SVM getting-started se
Computer Network Reading Notes-network layer, Computer Network Reading Notes
Network Layer
It is responsible for the best effort to forward data packets between different networks, based on the IP address of the data packet forwarding, if packet loss is not responsible for the loss of retransmission, is not responsible for the transmission order.
Network Device and data forwarding process
A vro is a layer-3
callback:Input=str2num (get(hobject,' String ')); The% check is null if empty, shown as 0if (IsEmpty (input)) set(hobject,' String ', ' 0 ' ) Endguidata (hobject,handles);A calculated event was added to the callback of the button:A=Get(handles.edit1,' string'); b=get(handles.edit2,' string '); Total =str2num (a) +Str2Num (b), c=num2str (total); % Update calculation result set(handles.edit3,' String ', c); the% update graphic object handle, the general callback callback function has guidata
I would like to ask for the principles of searching for books and searching for novels. I would like to ask for the principles of searching for books and searching for novels. as of 2011-12-1514: 19: 51. user posting rate: 0.00% Total posts: 4 normal Posts: 0 uncompleted posts: 4. ask for the principles of searching and reading novels and searching websites.
I would like to ask you how to search websites for novels such as searching and
In fact, the pdm file of PowerDesigner is an xml file. We can read the pdm file in the same way as reading the xml file.
Note: if you do not use the namespace manager, the system will prompt the following error:
The namespace manager or javastcontext is required. This query has a prefix, variable, or user-defined function.Note: An unhandled exception occurs during the execution of the current Web request. Check the stack trace information for details
Reading Notes in objective java Article 3 use a private constructor or enumeration type to enhance the Singleton attribute and Reading Notes
Singleton refers to the class that is instantiated only once. It is generally used to create classes that consume a lot of resources or require only one instance in the system. This is very common. I remember this interview question from my previous internship intervie
Java File Reading and java reading
Read can be read in bytes, in characters, or a whole line.
FileInputStream is read by byte.Read one byte at a timeIt is often used to read binary file slices, sounds, images, and so on.
1 try { 2 aFileInputStream=new FileInputStream(aFile); 3 // FileInputStream aFileInputStream2=new FileInputStream("E:/a.txt"); 4 int ch; 5 wh
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