What is Kotlin
Kotlin language is a modern computer language based on the Java Virtual Machine (JVM). It has a very clear and concise syntax that makes our code easy to read. As a JVM language, programs written in Kotlin can run anywhere Java can run. Kotlin can be compiled into Java bytecode or JavaScript, making it easy to run on devices without a JVM. In addition, Kotlin can also be compiled into binary code to run directly on the machine (such as embedded devices or iOS). Kotlin has officially become an officially supported development language for Android.
What’s the point of learning Kotlin?
- Improve development efficiency: Kotlin’s concise syntax can significantly reduce the number of lines of code.
- Safer: Kotlin’s type system provides powerful null safety features at compile time.
- Supports functional programming: Kotlin supports functional programming paradigm, which helps improve the readability and maintainability of code.
- Seamlessly compatible with Java: Kotlin can be called and mixed with Java code, reducing the difficulty of migrating existing Java code bases.
In today's fast-paced, fast-updating, fast-obsolete environment, you must absorb all the knowledge you can like a sponge, so Kotlin cannot be let go!
The most detailed introductory and advanced practice of kotlin coroutine for Android in history
abstract:
Kotlin introductory tutorial guide, advanced Kotlin enhanced practice and the most detailed Android version of kotlin coroutine entry and advanced practice in history.
Content features:
The knowledge points are clearly organized, with images and tables interspersed throughout the text, making reading comprehension clearer and easier to understand.
Table of contents:
The table of contents provides an overall organizational structure for study materials. It can help you understand the connections and hierarchical relationships between various chapters, giving you a clear direction and idea when reading and learning. In addition, the table of contents can also help you understand the overall picture of the study material. By reading the table of contents, you can have a preliminary understanding and understanding of the entire Kotlin learning, so as to better understand its overall framework and themes.
Quick overview of key chapters:
Although the material content is interpreted from the shallower to the deeper, in order to learn more efficiently and understand more thoroughly, we can do a quick overview. Some key chapters should be focused on learning. Doing things must be prioritized, and learning must be prioritized.
Chapter 1 Basic introduction to Kotlin coroutines
1.1 What is coroutine
1.2 What is Job, Deferred, and coroutine scope
1.3 Basic usage of Kotlin coroutine
Chapter 2 A preliminary explanation of the key knowledge points of kotlin coroutines
2.1 Coroutine scheduler
2.2 Coroutine context
2.3 Coroutine startup mode
2.4 Coroutine role Domain
2.5 Suspend function
Chapter 4 Basic application of kotlin coroutine in Android
4.1 Android uses kotlin coroutines
4.2 Using coroutines in Activity and Framgent
4.3 Using coroutines in ViewModel
4.4 Using coroutines in other environments
Chapter 6: In-depth understanding of the principles of kotlin coroutines (1)
6.1 suspend's colorful intestines
6.2 Hidden behind - Continuation
6.3 The hope of the village - SuspendLambda
Chapter 8 Kotlin Jetpack in practice
8.1 Start with a demo that worships the great god
8.2 What is it like to write Gradle scripts in Kotlin?
8.3 The three realms of Kotlin programming
8.4 Kotlin higher-order functions
8.5 Kotlin generics
8.6 Kotlin extensions
8.7 Kotlin delegates
Specific practical examples:
In Kotlin, the suspension point refers to suspending the coroutine and waiting for a certain condition to be met before continuing execution. The recovery point is to resume the execution of the coroutine when the suspension point meets the conditions.
For example, the following code demonstrates how to use suspend and resume points:
kotlin
import kotlinx.coroutines.*
fun main() = runBlocking {
launch {
delay(1000)
println("World!")
}
println("Hello")
// 挂起点
await()
println("After delay")
}
In the above code, we use the await() method to create a suspension point that will wait for 1 second before continuing. When the waiting time of the await() method ends, the program will continue execution and print "After delay".
end:
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