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**The fourth chapter of Android advanced application development -- AsyncTask** 1, What is AsyncTask? 1.AsyncTask is a lightweight (less code) asynchronous class provided by Android. 2. In order to reduce the development difficulty of asynchronous communication, AsyncTask is provided. 3.AsyncTask directly i ...

Details of mysql automatic partition Why auto partition: because there are more than one million pieces of data in a table, and the query speed is very slow, the auto partition function is added to improve the query ability. First, define the steps of partition: New backup table Delete new table partition Swap partition Del ...

My LeetCode: https://leetcode-cn.com/u/ituring/ My LeetCode source code [GitHub]: https://github.com/izhoujie/Algorithmcii LeetCode 912. Sort array subject Give you an array of integers, nums, in ascending order. Example 1: Input: nums = [5,2,3,1] Output: [1,2,3,5] Example 2: Input: nums = [5,1,1,2,0,0] Output: [0,0,1,1,2,5] Tips: 1 <= ...

Download Plug-in: less plug-in installation $ cnpm install less less-loader --save-dev By the way, the css plug-in is also installed $ cnpm install css-loader style-loader --save-dev webpack.config.js loaders join , { test: /\.less$/, use: [ 'style-loader', 'css-loader', 'less-lo ...

Read an article. Bowen , which is described as follows 1 #include <stdio.h> 2 3 int main() 4 { 5 unsigned short a = 1; 6 unsigned short b = 0; 7 8 if (a < (b-1)) //a and b-1 Result-1 All converted to int Type comparison, 1<-1，Obviously false 9 { 10 printf("in if\n"); 11 } ...

Conditional filtering Common filtration Example Interface usage Multilevel list get find default non ID Different api versions are not used Browse times Filter current user Multi parameter use Conditional filtering Common filtration _exact equals like 'aaa' __iexact is exactly the same as ig ...

meaning of the title There are n grasses, the height is 0 at the beginning. Each grass has a growth height of a[i], and m times of harvesting, in which the I time of harvesting is on the d[i] day, and all parts with a height of b[i] or higher are cut off. Find the total height of the grass you get from each harvest. n,m<=5 ...

Preconditions is a tool class provided by guava for code verification, which provides many important static verification methods. It is used to simplify the code verification or preprocessing in our work or development, and to check the rationality before the logic starts, so as to avoid data errors caused by too deep parameter input. And it ...

Catalog Topic 1 Topic two: Topic three: Topic 1 Guan Yu cuts three generals and inputs the force value of four people (greater than 0 and less than 50). If the force value exceeds the limit, it needs to be input again. If the force value of Guan Yu is x, the force value of generals is y, which satisfies (x-y) ^ 2+( ...

Reprinted from anonymous station like JS let str = "aabbccdd", the most letters in the statistics string Method 1 The key method is String.prototype.charAt The core idea is: first, traverse all letters in the string, count letters and the number of corresponding displays, and finally compare the letters with the largest number of ti ...