Analyze the right posture of Android Handler source code from the perspective of architect

What is the principle of Handler? Can you analyze the implementation mechanism of Handler in depth?The interviewer asked this question to know the source code of the handler, how to implement the handler mechanism, and whether he understood the message pump Looper.(more full project downloads. To be continued. Source code. The graphic knowled ...

Posted on Tue, 22 Oct 2019 11:25:21 -0400 by cordoprod

python self study Journal 4-string

1.for cycle Loop through characters with for Since I haven't used the for loop for a long time, I'm a bit rusty, so I wrote the following code. fruit='banana' len(fruit) index=0 for index<len(fruit): print(fruit[index]) index+=1 File "<ipython-input-2-f904b63b5686>", line 3 for index<len(fruit): ^ SyntaxError: inval ...

Posted on Tue, 22 Oct 2019 06:07:22 -0400 by jetskirich

[cutescript] latest introduction of ECMAScript2019

Recently ECMAScript2019, the latest proposal is completed: tc39 Finished Proposals , I also sort out the official introduction here. If you have any questions, you can check the official introduction.~ Besides, I've sorted it out before. ES6/ES7/ES8/ES9 series You can watch it together. 1. Optional catch binding 1.1 INTRODUCTION In the latest ...

Posted on Mon, 21 Oct 2019 23:34:00 -0400 by lesolemph

LDAP research log

Springboot+LDAP research log LDAP (I) concept LDAP is a Lightweight Directory Access Protocol. Its full name is Lightweight Directory Access Protocol, which is generally referred to as LDAP. It's based on the X.500 standard, but it's much simpler and can be customized as needed. Unlike X.500, LDAP supports TCP/IP, which is necessary to access t ...

Posted on Mon, 21 Oct 2019 15:37:48 -0400 by jemgames

Vue components and component communication

Global component of component //Note: you need to register global components before Vue instantiation. Use Vue.component("component name", {template: ` component template '}) Vue.component("show-name",{ template:` <div title="Be careful, The root element of a component template must have and only have one"> <p> ...

Posted on Mon, 21 Oct 2019 15:34:27 -0400 by teanza

vue login page as modal Global

background The vue project has a login page for use as a separate page. You want to transform it into a modal, which is then globally callable. Similar to the toast component of mint UI. The location to be used is mainly in the vue page and the interface request response data processing method (the environment cannot get the current scope thi ...

Posted on Mon, 21 Oct 2019 13:04:44 -0400 by merck_delmoro

Eureka application registration and cluster data synchronization source code analysis

Prior to EurekaClient automatic assembly and startup process analysis We mentioned in the article that when constructing the DiscoveryClient class, it will register itself to the server. This article will analyze this registration process. Client initiated registration boolean register() throws Throwable { logger.info(PREFIX + "{}: ...

Posted on Mon, 21 Oct 2019 13:00:39 -0400 by blogger3

Futures data server and data access interface

Use of futures data server Software for receiving tick data of futures and options The tick data provided in shared memory can generate k-lines in real time and provide seamless data services to clients. The functions are as follows: 1. Contract attribute. 2. Contract index table. 3. Main contract list. 4. Tradable contracts. 5. Trading d ...

Posted on Mon, 21 Oct 2019 12:34:37 -0400 by jheitz

Detailed explanation of DOM attribute of jQuery source code analysis data operation module

There are four parts in jQuery's attribute operation module. Let's talk about the second part: DOM attribute part, which is used to modify the attributes of DOM elements (attributes and attributes are different, generally property is translated into attributes, and attribute is translated into attributes). The static method interface of DOM att ...

Posted on Sun, 20 Oct 2019 20:40:28 -0400 by pearllysun

Prototype chain of js inheritance of prototype chain

Object method Object.assign() //Objects can be abbreviated. If key and value are equal, they can be abbreviated. let name = 'xm'; let age = 2; let obj = { name, age, fn(){ // Function keywords and colons can be omitted: console.log(22); } } //Object.setPrototypeOf() let o2 = { age: 22, name: 'mazz' } let o1 = { ...

Posted on Sun, 20 Oct 2019 13:37:17 -0400 by wilded1