getter method

During program debugging, it was found that the IBOutlet object was always looking for the code that was executed before the IBOutlet object getter method when executing getter, but it could not be found, so I figured out whether the system

If (Self = [Super init] {…To perform one-time initialization for a superclass, call [Super init]. The value returned by the init method (ID data, that is, generic object pointer) describes the initialized object.Assigning the result of [Super init]

Kaikaijia sent a private message to me, saying that I want to add a group. I will create an iOS development group for technical exchanges and resources. Group Number:241048287If you are interested, you can add a group. The verification information

1. Handwriting Bubble and insert sortbubble sort comes from the common sense of life, the equivalent of putting the array up, light upward, heavy downward.voidBubblesort (int[] unsorted) { for(inti =0; I ) { for(intj = i; J )

1. Describe the design patterns commonly used in your project. What are their pros and cons?The common design patterns are: agents, observers, and Singleton.(1) Singleton: It is used to restrict the creation of a class to only one object. The

is the class of the basic article objective-c multiple inheritance? Can I use multiple protocols?It is not possible to multiply inheritance, you can use multiple protocols.What mechanism does OBJC use to manage object memory? MRC Manual

Java Exception:1. Error2. Runtime Exception run-time exception3, Exception4. Throw user Custom exceptionThere are two types of exception classes: the Error class represents compilation and system errors, does not allow capture, and the exception

Dot Syntax and @propertyKnowledge points1.setter/getter function2. Dot syntax[Email protected] syntax and properties========================================First, setter and getter functionsThe role of 1.setter and getter functionsSetter method:

The appearance of the control, which is affected by tint color,background image, background color, and so on, typically modifies the appearance of a control object. Just call the relevant setter methods of the above properties (or other methods that

A few days ago, why did we use Spring MVC? What is the root cause of Spring MVC's popularity? is Spring MVC just a convenience in dealing with Ajax requests, and does it have any other advantages?In response to these questions, I looked up some

[52 Effective ways to write high-quality iOS code] (10) Grand Central Dispatch (GCD)Reference book: "Effective Objective-c 2.0", "English" Matt GallowaySneak Peek41. Multi-use dispatch queue, less use of synchronous lock42. Multi-use GCD, less use

UseValueanimatorto animateA collection of values that specify some type of int, float, or color. valueanimator enables you to animate these types of values. You need to get a valueanimator object by calling a factory method of Valueanimator . For

Original sticker: Why Python does not need getter and setterGetter and setter are widely used in Java. A good Java programming guideline is to set all properties to private, and write getter and setter functions for the properties for external use.

Fluent Python Verse 9.6 speaks of hashable Class,In order for the Vector2d class to be hashed, the following conditions are available:(1) Implement __hash__ method(2) Implement __eq__ method(3) Make vector2d vector immutableHow do I make a vector of

Encapsulation literally is the meaning of packaging, the professional point is information hiding, refers to the use of abstract data types to encapsulate data and data-based operations together to form an indivisible independent entity, the data is

PackagingConcept: Refers to the hidden object's properties and implementation details, only provide public access to the external way. is one of the three main characteristics of object-oriented.Benefit: Isolate the change. Improve reusability.

Synchronization of Java multi-thread threadsIn actual development, we also often mention thread safety, so what is thread safety problem?Thread insecurity means that there is an error condition in multithreaded programming, because the thread

4.4.3 constraints (part of pattern)We have already introduced the conditional constraint in the pattern position, then what is the conditional constraint? In simple terms, an expression that returns TRUE or false, such as the following 5 less than 6,

Set the entry for the comment template: Window->preference->java->code style->code template and then expand the Comments node is all the elements that need to be annotated. This article is now on each element to introduce you to each one.Files Note

How to enrich the content of Eclipse annotationsComments, Code Templates---Preferences, Windows, Eclipse, Window (Comments represents a comment template)1. Files (Java file comments)/***/2. Types (Java class comment)/**@author @version @since*/3.