AwesomeKotlinDSL.kt

package com.awesome.kotlindsl

import android.app.Activity
import android.content.Context
import android.content.Intent
import kotlin.contracts.ExperimentalContracts
import kotlin.contracts.InvocationKind
import kotlin.contracts.contract

@ExperimentalContracts
inline fun <T:Intent> T.putsome(block: Intent.() -> Unit): T {
    contract {
        callsInPlace(block, InvocationKind.EXACTLY_ONCE)
    }
    block()
    return this
}

inline fun <reified T : Activity> Context.launched() =
    Intent(this, T::class.java)