Extract type alias

Language: Kotlin

Shortcut: Ctrl+Alt+Shift+A

Before	After
`// (Int) -> Boolean will be extracted fun foo(p: (Int) -> Boolean) = p(42) fun main() { val f: (Int) -> Boolean = { it > 0 } println(foo(f)) val p: (Int) -> Boolean = { it > 0 } println(listOf(1, -2).filter(p)) }`	`// New type alias added typealias IntToBoolean = (Int) -> Boolean // All the occurrences of (Int) -> Boolean // replaced with IntToBoolean fun foo(p: IntToBoolean) = p(42) fun main() { val f: IntToBoolean = { it > 0 } println(foo(f)) val p: IntToBoolean = { it > 0 } println(listOf(1, -2).filter(p)) }`

Before

After

// (Int) -> Boolean will be extracted
fun foo(p: (Int) -> Boolean) = p(42)

fun main() {
    val f: (Int) -> Boolean = { it > 0 }
    println(foo(f))

    val p: (Int) -> Boolean = { it > 0 }
    println(listOf(1, -2).filter(p))
}

// New type alias added
typealias IntToBoolean = (Int) -> Boolean

// All the occurrences of (Int) -> Boolean
// replaced with IntToBoolean
fun foo(p: IntToBoolean) = p(42)

fun main() {
    val f: IntToBoolean = { it > 0 }
    println(foo(f))

    val p: IntToBoolean = { it > 0 }
    println(listOf(1, -2).filter(p))
}

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Extract type alias﻿

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Extract type alias

Code example