Domain-specific languages, or DSLs, are languages for a specific part of an app. It is used to extract a part of the code to make it reusable and more understandable. As opposed to a function or a method, DSLs also change the way you use and write code. specialized To make a DSL means to change the syntax of that specific part of the code. In Kotlin, this is achieved by using lambda and extension functions, and expressions, to remove a lot of boilerplate code and hide the internal implementation from the user. For example, I will take a newly created project and I will use the example to translate it from Groovy to Kotlin step by step. The first thing we will do is change the file extension from to .gradle .gradle.kts Changing plugins plugins {  
    id("com.android.application")  
    id("org.jetbrains.kotlin.android")  
} Let's go to the android block and change the fields и : namespace compileSdk namespace = "kz.azamat.androidlessoncoroutines"  
compileSdk = 33 Changing block: defaultConfig defaultConfig {  
    applicationId = "kz.azamat.androidlessoncoroutines"  
    minSdk = 23  
    targetSdk = 33  
    versionCode = 1  
    versionName = "1.0"  
    testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"  
} Changing for block: buildTypes buildTypes {  
    getByName("debug") {  
        isDebuggable = true  
    }  
    getByName("release") {  
        isMinifyEnabled = false  
        proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")  
    }  
} will be changed to java and make a change for , and for : compileOptions sourceCompatibility targetCompatibility kotlinOptions java {  
    sourceCompatibility = JavaVersion.VERSION_1_8  
    targetCompatibility = JavaVersion.VERSION_1_8  
}  

kotlinOptions {  
    jvmTarget = "1.8"  
} Finally change the dependency section: dependencies {  
    implementation("androidx.core:core-ktx:1.7.0")  
    implementation("androidx.appcompat:appcompat:1.6.1")  
    implementation("com.google.android.material:material:1.9.0")  
    implementation("androidx.constraintlayout:constraintlayout:2.1.4")  
    testImplementation("junit:junit:4.13.2")  
    androidTestImplementation("androidx.test.ext:junit:1.1.5")  
    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")  
} Eventually, our code looks like this:

The code in this story is for educational purposes. The readers are solely responsible for whatever they build with it.

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