Lesson 20: Quick Code Practice

{{interaction. likeNum==0? (pageType==='video'? 'Like First': 'Like'): formatNumber (interaction. likeNum)}} {{interaction. collectionNumber==0? 'Collection': formatNumber (interaction. collectionNumber)}} {{interaction. discussNum==0? (pageType=='video'? 'grab the sofa': 'discussion'): formatNumber (interaction. discussNum)}}

put questions to {{interaction. noteNum>0? Interaction. noteNum+'notes':' notes'}} Offline viewing

Download the school APP

Cache video for offline viewing

Reporting problems Offline viewing

Download the school APP

Cache video for offline viewing

Course Introduction

discuss {{interaction.discussNum ? '(' + interaction.discussNum + ')' : ''}}

Suitable for people

Basic programming, interested in Kotlin

You will learn

Learn the basic syntax and language features of Kotlin. You can use Kotlin for WeChat development and server development

Course Introduction

There are ten chapters in the course, starting with environment building and Kotlin's basic grammar, and going step by step, to explain how to develop WeChat through Kotlin step by step. This course mainly involves Kotlin, Java, SpringBoot, maven, BeetlSQL, MySQL, redis, OkHttp, Vue.js, axios, HTML5, JavaScript, CSS and other knowledge points.

Expand more

release

Topping note

{{ item.create_time }} {{ Number(item.like_count) || '' }} reply

delete
Are you sure to delete?
confirm
cancel
{{item. is_top==1? 'Cancel topping': 'topping'}}
The discussion that has been set to the top, do you want to replace the existing one?
confirm
cancel

{{ subitem.create_time }} {{ Number(subitem.like_count) || '' }} reply

delete

Click to see more Stow

release

{{pageType==='video '?' The discussion area grabs the sofa, and you can get double credits': 'The discussion area is empty, please say two sentences~'}}

release

{{ noteHeaderTitle }} note {{hasMyNote? 'My notes':' Take notes'}}

Quality Notes

Updated on: {{$dayjs. format ('YYYY-MM-DD HH: mm: ss', item.last_uptime*1000) }}

Public notes are visible to others and have the opportunity to be rated as "high-quality notes" by the administrator

{{ noteEditor.content.length }}/2000

Public Notes

preservation

put questions to

The lecturer will answer your questions as soon as possible. If you choose to ask questions in public, you can get more help from students.

Record time point

Record the time when the video is played when asking questions, so as to facilitate subsequent viewing

Open questions

Submit

Lesson 20: Quick code practice