Programmer Think

@annotation() Restrict matching of join points with specified annotations The final structure of each class is as follows: 1,Factory package com.test.aspectj.expression; /** * Factory interface */ public interface Factory { // Make products void make(); // transport void delivery(String address); } ...

Article directory 1, Render props mode 1.1 overview of react component reuse 1.2 thinking analysis 1.3 operation steps 1.4 children instead of the render attribute 1.5 code optimization 2, High order components 2.1 overview 2.2 thinking analysis 2.3 use steps 2.3 settings ` displayName` 2.4 transf ...

Annotation practice Roughly make a simple practice, make an ORM small scheme, and realize it by annotation A user table information, field: id, user name, nickname, age, gender, address, email, mobile number Simply retrieve each field or combination of conditions and print SQL to display the results When retrieving data, we need to consi ...

Last time I talked about Activity, this time I talked about ContentProvider, one of the four components of Android 1. What is ContentProvider ContentProvider is one of the four components of Android content provider Function: data interaction & sharing between processes, i.e. cross process communication 2.uri introduc ...

Article Directory HTML tags: form tags CSS: Page Beautification and Layout Control 1. Concepts: Cascading Style Sheets Cascade Style Sheets 2. Benefits: 3. Use of CSS: How CSS works with html 1. Inline Styles 2. Internal Style 3. External Styles 4. css syntax: 5. Selector: Filter elements with simi ...

Several pain points of handwritten Api documents: When a document needs to be updated, it needs to send another copy to the front end, that is, the document update communication is not timely. Ambiguous interface return result You can't test the interface directly online. You usually need to use ...

The Josephu problem is also called "the problem of losing handkerchief". Problem Description: set n children with number 1, 2, 3, 4... In a circle. It is agreed that children with number k will start counting from 1, and children who count to m in turn will be listed. Then the next one of ...

In the iOS development process or user feedback, you may often see this situation. When you use it, you will crash. When you check the crash stack in the background, you cannot find the crash log. In fact, most of this may be due to the system's low memory crash, that is, oom (another possibility is tha ...

1. Date Compatibility Under Android Date.parse(new Date('2018-03-30 12:00:00')) Under ios system Date.parse(new Date('2018-03-30 12:00:00')) Conversion is not possible. Solution (compatibility writing) Date.parse(new Date('2018/03/30 12:00:00')) || Date.parse(new Date('2018-03-30 12:00:00')) Encapsul ...

On the front road, accumulate slowly 1. Get the parameter value passed by the URL through the parameter name Method 1 GetQueryString:function(name){//Get the parameter value passed by the URL through the parameter name var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i"); var r = window.location.search ...