Learning A New Language While Learning A New Language - AppDevCon, Amsterdam, March 2018

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Learning a new language while Learning a new language AppDevCon | Amsterdam | March 2018 @DesignatedNerd | bakkenbaeck.com | justhum.com

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ANYWAY

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✌

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!!!!!

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vs.

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ANYWAY

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Fail hard. Fail often.

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Fail hard. Fail often. Learn. Improve.

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Spreekt je Engels?

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(iedereen spreekt Engels)

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Amsterdam ME: Kan...ik...uh, betaal...voor...

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Amsterdam ME: Kan...ik...uh, betaal...voor... THEM: It's OK, I speak English!

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Amsterdam ME: Kan...ik...uh, betaal...voor... THEM: It's OK, I speak English! [rest of conversation in English]

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Nijmegen ME: Kan...ik...uh, betaal...voor...

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Nijmegen ME: Kan...ik...uh, betaal...voor... THEM: [smiling and waiting]

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Nijmegen ME: Kan...ik...uh, betaal...voor... THEM: [smiling and waiting] ME: Uh, mijn...maaltijd met een creditcard?

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Nijmegen ME: Kan...ik...uh, betaal...voor... THEM: [smiling and waiting] ME: Uh, mijn...maaltijd met een creditcard? THEM: Nee, we accepteren alleen pinpas.

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Nijmegen ME: Kan...ik...uh, betaal...voor... THEM: [smiling and waiting] ME: Uh, mijn...maaltijd met een creditcard? THEM: Nee, we accepteren alleen pinpas. ME: Uhhh...ik heb niet...

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Nijmegen ME: Kan...ik...uh, betaal...voor... THEM: [smiling and waiting] ME: Uh, mijn...maaltijd met een creditcard? THEM: Nee, we accepteren alleen pinpas. ME: Uhhh...ik heb niet...spreekt je Engels?

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Don't bend a new language to ﬁt what you already know

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Naar vs. Near

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Ik woon naar het station != I live near the station

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Java-style Singleton private var instance: SomeService? = null fun getServiceInstance(): SomeService { if (instance == null) { val retrofit = Retrofit.Builder() .baseUrl("https://example.com") .addConverterFactory(GsonConverterFactory.create()) .build() instance = retrofit.create(SomeService::class.java) } return instance as SomeService }

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Moar Kotlin-ier Singleton val instance: SomeService by lazy { val retrofit = Retrofit.Builder() .baseUrl("https://example.com") .addConverterFactory(GsonConverterFactory.create()) .build() retrofit.create(SomeService::class.java) }

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Early examples seem contrived

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ANYWAY

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Keep going

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Keep going (it will eventually make sense)

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Friends

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True Friends exactly the same computer -> computer student -> student weekend -> weekend

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True Friends exactly the same computer -> computer student -> student weekend -> weekend map -> map filter -> filter

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True Friends exactly the same close enough! computer -> computer work -> werk student -> student orange -> oranje weekend -> weekend text -> tekst map -> map filter -> filter

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True Friends exactly the same close enough! computer -> computer work -> werk student -> student orange -> oranje weekend -> weekend text -> tekst map -> map func -> fun filter -> filter enum -> enum class

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False Friends

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Slim

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reduce

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False friends are easier to remember

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Words or concepts with no equivalent

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Gezellig

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via StuffDutchPeopleLike.com

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Lekker

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Lekker!

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async / await

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fun main(args: Array) = runBlocking { val a = async(coroutineContext) { log("I'm computing a piece of the answer") 6 } val b = async(coroutineContext) { log("I'm computing another piece of the answer") 7 } log("The answer is ${a.await() * b.await()}") }

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Obligatory Summary Slide

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Verplichte Samenvetting Dia

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Verplichte Samenvetting Dia → Fail often and hard. Learn from your failures.

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Verplichte Samenvetting Dia → Fail often and hard. Learn from your failures. → Resist the urge to bend a new language to ﬁt one you already know

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Verplichte Samenvetting Dia → Fail often and hard. Learn from your failures. → Resist the urge to bend a new language to ﬁt one you already know → Don't worry if the initial examples seem contrived. → Find your friends, true and false.