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objective-c - @property overrides setter and getter methods

Why can't I access the _ attribute when I rewrite the getter and setter methods at the same time? How can I rewrite the getter and setter methods at the same time? Xiaobai wants to ask for advice!

過(guò)去多啦不再A夢(mèng) 2017-05-02 09:24:48 0  2  883

Objective-c - Issues with getters/setters in iOS

{Code...} The above does not override the getter/setter method of lastName in the subclass SmithPerson. I can reassign the value through self.lastName in init, but if I override the getter/setter in the subclass, how do I rewrite it? What about assignment? self.lastName will call the setter of the s...

巴扎黑 2017-05-02 09:30:21 0  1  672

javascript - ES6 . getter setter

class Person { {code...} } The set get definition function here does not have the ES6 abbreviation of the previous set get. Why is the function here called by default during assignment?

曾經(jīng)蠟筆沒(méi)有小新 2017-05-18 10:45:31 0  1  511

Exposing useState setter function to global scope in React

I'm curious if I can do something like this: const[panelActive,setPanelActive]=useState(false);(globalThisasany).setPanelActive=setPanelActive;useEffect(()=>console.log(panelActive),[panelActive]) out of For some reason when I call the setPanelActive function from outside

P粉299174094 2023-09-11 09:41:15 0  2  970

How to rewrite NSOperation in Swift like in OC?

{Code...} This class covers the original start method in nsoperation. How should I write it in swift? Especially the setter method [manually trigger KVO]. Thank you here.

phpcn_u1582 2017-05-02 09:33:02 0  1  542

objective-c - How to assign values ??to member variables

We all know that the assignment of attributes is to call the setter method of the attribute, but how are member variables assigned? What is its internal implementation principle?

怪我咯 2017-05-02 09:27:14 0  2  661

What's the point of react-hooks/exhaustive-deps warning for state setter?

I'm using React to build pagination. The application uses state to manage paging and search. I want to reset the pagination to page 1 when the search term changes. //SimplifiedexamplefunctionuseSearchTerm(){returnReact.useState("");}functionusePage(){returnReact.useState(1);}functionMyComp...

P粉465287592 2023-09-01 22:11:31 0  1  760

How to prevent state reset when calling state setter in 3rd party library

I'm trying to convert a React class component into a React function component. There is an onChange function that can be called both inside and outside the component. The useState hook gets the initial value when the function component function is called. When I use the old class component way every...

P粉835428659 2023-09-10 22:56:16 0  1  735

Objective-c - Regarding the problem of using self in the getter method to cause an infinite loop?

Properties: @property (strong, nonatomic) NSArray *dataArr; Override the getter method (the code is about lazy loading, but this is not the point) {code...} What I know now is that using self.dataArr will call the property getter method and setter method so I think if...

僅有的幸福 2017-05-02 09:29:01 0  1  727

Vue checkbox returns Null when unchecked

I'm writing a Vue application using Vuetify. In this application, I use v-for to iterate over an array of objects to build a list of cards. Inside each card is a checkbox mapped to a calculated getter/setter that updates the value in my Vuex store. When the checkbox is selected I log out the value a...

P粉637866931 2024-03-26 22:07:01 0  1  581

angular.js - How to save the form data filled in by the user when switching views in the jump route? ~

The currently thought of method is to save it on $rootScope, which is obviously not good... You can save it in Service. But what is the timing of saving? Monitor the form input and then call the setter method in real time? ~ Is there a more elegant way? ~

黃舟 2017-05-15 17:12:55 0  3  697

Pass arguments to a specific function in a PHP file on the server side (from JS) and return the result to the JS function that called the function

Basically what I'm doing is creating a graphing calculator (using BokehJS) that currently takes some input via html, then javascript reads the data and does the calculations, then outputs the resulting graph. The problem is that we don't want the user to be able to see all the calculation code. It w...

P粉593649715 2024-01-16 22:27:27 0  1  638

Laravel Modal does not return data

I don't know why I'm not getting the value from the modal in my Laravel controller. Please check it for me. However, I use the same code for other modes and controllers. It's working and returning the value from the property without any issues. I'm using Laravel8 and php8.1; below is my code. app\Ht...

P粉174151913 2024-03-29 10:31:31 0  1  591

Can I use the automatic generation module of thinkphp5 in Windows 7 system? How to configure and use

明民 2017-10-10 17:04:14 0  2  1389

After installing the PHP toolbox, all the mysql tables in phpstudy that I installed before are gone. What should I do?

After installing the PHP toolbox, all the mysql tables in phpstudy that I installed before are gone. What should I do?

劉袁銘 2017-10-10 19:25:59 0  4  2943

mcrypt_get_key_size()

To use mcrypt_get_key_size() in php study, how to enable mcrypt_

劉袁銘 2017-10-10 19:47:34 0  1  1172

Detecting login status and preventing repeated login status in TP5 - My page is wrong

冥冥之中天注定 2017-10-10 22:49:15 0  0  1187

Issues with resending WeChat public account template messages?

For example: I am using PHP to develop WeChat public accounts. If I send a template message, the WeChat client may receive 1-3 messages. I checked Baidu and said that the WeChat server will resend in 5 seconds. How to solve this problem?

飛揚(yáng) 2017-10-11 08:00:11 0  0  1141

How to install php7

我無(wú)限黑暗里的小太陽(yáng)▼ 2017-10-11 09:11:44 0  1  1145

Solve (no language limit)

A census taker asked a woman, "How many children do you have and how old are they?" The woman replied, "I have three children. Their ages multiplied is 36. The sum of their ages is equal to the house number of the segregated room." Census The enumerator immediately went to the ne...

路過(guò) 2017-10-11 10:20:08 0  1  1364