you can easily add methods and attributes with Category through Objective-C Runtime,. his implementation principle is the object structure, objc_class contains the methodLists, is a secondary pointer, a pointer to the pointer. struct objc_method_l...
-sharpinclude <stdio.h> void f(void){ char a[8]; char b[8]; scanf("%s",a); scanf("%s",b); printf("%s-sharp-sharp%s-sharp-sharp n",a,b); } int main(void){ f(); return 0; } As for the begi...
there are two input input boxes on the rt: page. When the input method is called on the iphone, the page will be topped up, how to set it up so as not to be topped. look up some solutions on the Internet, all with an input box at the bottom of the page,...
how to quickly initialize a two-dimensional array to the same element in OC, and modify the value of one of the elements for example, to initialize an array of length 50, and each element has a value of @ "a ", then modify the value of array [10]...
problem description when you use WKWebView to render a piece of plain text code, the style is lost, but you can render normally by parsing it in the browser related code, html text 123 <br >----------------------------<br > <!DOCTY...
WKWebView failed to load picture [loadHTMLString:content baseURL:nil], when using this code to load dddddd ...
for example, when using a free account, only 3 debug packages can be installed on the real machine. Can the jailbreak machine fool Xcode so that it is no longer restricted? how to do it? ...
want to achieve an effect, such as album APP, select photos, long press to select multiple photos, when the gesture slides to the bottom of the screen, the view will automatically scroll up to allow users to select more pictures, how should this functio...
as detailed in the title: in my impression, iOS loads h5 content and loads an h5 page directly, and the final result is that the content displayed on a page is displayed directly on the h5 page, so why do you still need to get the height of h5 content?...
IOS ele.me product details page ~ how to achieve this effect? Can you explain? thank you. TableView can t move when it slides up ~ TableView can slide only when it reaches the top....
the size parameter of the UIGraphicsBeginImageContextWithOptions function is too large, resulting in a memory explosion I use size data, which is about 3 times the height and width of the screen size, that is (3 UIScreen.main.bounds.height,3 UIScree...
Deep copy is only a copy of the outer layer. I need an array element that is exactly the same as the old array, but the element addresses of all child elements and child elements are not the same. the current idea is to nest and traverse all elements, b...
textView.dataDetectorTypes = UIDataDetectorTypeAll; is an attribute of the ios system to identify mailbox linked phones, but Red is the red I set to identify linkTextAttributes rich text. How to remove the gray underline? I didn t set it, but you c...
using Wechat s sharing function, when sharing PDF files with friends, the right thumbnail is always displayed in red background plus file format PDF. Even if thumbImnage is set up in time, the thumbnail cannot be modified. Can you modify it and how? ...
after collectionview adds a cell, but closes the APP, what do you want to do with the data source when you open the cell, and find that it has not been added? ...
for example, if a button becomes unavailable after it is clicked, it can not be clicked until the next day, so the button can only be clicked once a day, such as check-in, so how to update the status of the button at zero? ...
I have tried the method of setting flag bits in various build setting is invalid. Please help me. Thank you. ...
1. The project is an old OC project. In the bridge swift 2.build Setting configuration, Defines Module is changed to yes,product Name as the project name, the bridge file is automatically generated by the system and the path is correct 3. Create an ex...
after going through the official sdk and testing Qiniuyun, the callback verification always fails, and the true TM is speechless. get token: ** * token * public function fetchUploadToken() { Auth $auth = new Aut...
whether to write code is whether the more intermediate variables are written, the better such as a point: public class Point{ int x; x int y; y int isExist; x,y int quadrant; x,y } is it necessary to crea...
after the foreground clicks the file name, the background converts the doc file into a pdf file through openoffice, and then stores it in the server tomcat . After pdf.js loads the transformed pdf file in tomcat in the server for the first time, it wil...
proxyTable: { " api":{ target: https: app.hsltm.com , changeOrigin: true, pathRewrite: { ^ api : api } }, ssm-api : { target: https: appdb.hsltm.com , cha...
the impact of hungry mode on system performance can be ignored. Under what circumstances will hungry people be required not to be used? ...
previously used and online materials are enabled by default to use tomcat; recently, when building Springboot, tomcat, was not excluded and jetty dependency was not introduced, but Jetty was used to start by default at startup. the following are th...
"stylus": "^0.54.5", "stylus-loader": "^3.0.2" ...