Programmer Group

PreparationRegister for appkeyIntegrated sharesdk (download address)Xcode configuration: urlScheme is the registered appkey, white list: douyinsharesdk, douyinopensdkBusiness codeInitialization import <ShareSDK/ShareSDK.h> [ShareSDK registPlatforms:^(SSDKRegister *platformsRegister) { //Jitter [platformsRegister setupDouyinByAppKey:@"app_ ...

Dependency: NSString: NSObject: Foundation NSString is an immutable string object. This does not mean that the value of the variable declared by this object is immutable, but that after initialization, you cannot change the value in the memory allocated by this variable, but you can reallocate the memory space of thi ...

Recently, we are working on a wechat enterprise project. One of the requirements is to play video on the enterprise page. At the beginning, we used the video tag to load the video address directly. As a result, it can play normally in android phones, but not in ios phones. In ios, the symptom is that the video is always loaded, but it can't be ...

Topic connection: https://codeforces.com/problemset/problem/1101/C Abstract: for n line segments, find a dividing point, and divide the line segments into two sets. The line segments of different sets will not have intersections My own approach is to discretize the endpoints and enumerate them to determine whether ...

Many friends' APP promotion links need to be publicized, propagated, downloaded and so on in wechat, but you must have found that the download links of APP are blocked in wechat. But wechat is the biggest social platform. For its own benefit, it blocks all APK download links. How can we solve this problem? Solution: Based on wechat interface, ...

1. Magic properties related to class #Get the internal member structure of an object or class#Get the internal doc ument of an object or class#Get class name function name#Class gets the class to which the current object belongs#Get all the parent classes directly inherited by a class, return tuples   2. reflection #Concept: use string to m ...

Title Link: https://vjudge.net/problem/HDU-1495 There are two empty cups (N l and M L respectively) and A full can of coke (S l), S = N + M, three containers can be poured into each other. If A is poured into B, there are only two cases:(1) pour all A into B, and the number of liters in B is less than or equal to the maximum capacity of B.(2) ...

I will give you two strings a and B of the same length. You can invert a substring of string a once to make a and B the same. I will ask you how many ways to invert. It is discussed in two cases. If the initial a and B are the same, the answer is the sum of the palindrome radius of each character. If a and B are different, find out the first d ...

meaning of the title Divide n numbers into several groups. The minimum number in each group cannot be more than the total number of elements in this group. Find the number of schemes. N<=2000.   Reflection If we get a partition of n numbers, we can simply find out the number of schemes. After sorting it from large to small, let larger I ...

Closure function Definition of closure function: Closed: a function defined within a function Package: the inner function references the name of the outer function scope There are two ways to pass values to function bodies: 1. transmitting ginseng   def index1(username): print(username)   2. closure def outter(x,y): #Passi ...