Tag：case
-
Time：2020-7-3
When we write code or documents, we often need to add the same content at the beginning or end of multiple lines. It is obviously inefficient to manually operate one line at a time. It is convenient to do such things. Case 1 hold aaa bbb ccc ddd eee Change to # aaa # bbb […]
-
Time：2020-6-29
abstract Spark is an Apache project, which is billed as “lightning fast cluster computing”. It has a thriving open source community and is currently the most active Apache project. Spark provides a faster and more general data processing platform. Compared with Hadoop, spark can make your program run 100 times faster in memory or 10 […]
-
Time：2020-6-14
When defining a function, one part of the function is certain, but one part is uncertain, and the certain part uses the uncertain part, then the uncertain part will be exposed. It’s done by subclasses. Case: find the running time of a piece of code abstract class GetTime{ public final void getTime(){ long start = […]
-
Time：2020-6-7
Today, I met a case insensitive problem to eliminate JS regular expressions. I searched online and found that I was really a rookie. In JS / / g, where G is the global match, if not, it means that the match can only be completed once automatically. / I / means that the matching process […]
-
Time：2020-5-21
Closure case Ordinary function //Ordinary function function f1() { var num = 10; num++; return num; } console.log(f1()); //11 console.log(f1()); //11 console.log(f1()); //11 Closure of function pattern //Closure of function pattern function f2() { var num = 10; return function () { num++; return num; } } var ff = f2(); console.log(ff());//11 […]
-
Time：2020-5-18
Case 1: application of query system user (99331839643945506) associated product association [sys_user] [sys_user_prod] [product] [app] uid————-user_id /—id———-products / prod_id——-/ Difficulties:The app table maintains a collection of all associated product IDS through a field products. For example: 2 or 4,11,12 realization: SELECT `id`,`uuid`,`name`,`token`,`time`,`products` FROM app where CONCAT(‘,’,products,’,’) REGEXP ( SELECT CONCAT( ‘,{1}(‘, GROUP_CONCAT(prod_id SEPARATOR ‘|’) , […]
-
Time：2020-5-14
1. Animation CSS Transition ————– CSS Animation ————- 2. CSS3 wave animation effect http://www.bootstrapmb.com/item/4308/preview 3. JQuery particle background plug-in circlemagic.js http://www.jq22.com/jquery-info16175 4. Notes Transform animation action The animation duration of transition needs to be combined to make the transition have a transition 5. Animation case setThe case continues to add
-
Time：2020-5-10
Use background Recently, the project uses nodejs + webpack as the front-end construction, Tomcat as the web container. When packaging, you want to exclude or only print the built front-end files. Here, you use Maven war plugin to do some configuration to realize the filtering and increase of resources when you play the war package. […]
-
Time：2020-5-9
Original address If you want to learn machine learning, but you don’t have your own environment / graphics card. Here’s the good news. Google has a free machine learning environment to use Search on Googlegoogle colab, open the search address: https://collab.research.google By default, you will be prompted to create a new Notepad. This is because […]
-
Time：2020-5-8
Sandbox cases Substr interception, starting from the specified field (function () { Var STR = “Xiaobai likes Xiaohei”; str=str.substr(2); console.log(str); }()); Substr interception, starting from the specified field //Sandbox (function () { Var STR = “Xiaoming likes Xiaohong”; str=str.substr(2); console.log(str); }()); Sandbox case, operation page element This is a div This is […]
-
Time：2020-4-29
1. The implementation principle of async function The implementation principle of async function is to wrap the generator function and automatic actuator in one function. The async function returns a promise object async function fn(args) { // … } //Equivalent to function fn(args) { return spawn(function* () { // … }); } be-allasyncFunctions can be […]
-
Time：2020-4-26
1) For registering bean object annotations 1.1 @Component effect: Call the nonparametric construct to create a bean object and store the object in the spring IOC container for management. This is equivalent to configuring a bean in XML. Properties: Value: Specifies the ID of the bean. If the value attribute is not specified, the default […]
