Nice - nullable.toString() works as well! 
pic.twitter.com/exr0BQh788
Announcing tech preview of null safety in Dart!
Null safety helps you avoid a class of bugs that are often hard to spot. Dart’s null safety is sound, so it enables a range of performance improvements.
Happy coding!
Learn more → https://goo.gle/2BUUxav pic.twitter.com/59fl1r0YMU
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I thought this would show me a warning telling me that a may be null :(
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When can we expect Flutter to support null safety as an experimental feature?
I am excited by this announcement 
Still, this preview has been available for quite a while already 
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We're working on adding null safety to the Flutter framework and it's dependencies. We'll do a tech preview of that when it's ready, and hopefully we'll have an update on that soon!
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Guys, let's migrate from Dart to Kotlin ;)
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Hell no quite the opposite. Keep Dart as simple and solid as you can. Kotlin has side effects that need to be checked at the compile level, which is the last thing I want to do when I'll happily coding
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You are my new favorite language
Terima kasih. Twitter akan menggunakan maklumat ini untuk menjadikan garis masa anda lebih baik. Buat asalBuat asal
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Coming from a Kotlin background I have to say it's very similar and even improved : fully sound, conditional access "short circuit" (not sure how to call it, see DartPad snippet 5) and lazy usage of late (no need for another keyword). Good job
@dart_langTerima kasih. Twitter akan menggunakan maklumat ini untuk menjadikan garis masa anda lebih baik. Buat asalBuat asal
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Is safe-navigation still a thing? So there are still nullables in certain situations right?
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The safe-navigation operators still work, and in fact have been extended and improved to make it easier to work with nullable things correctly when you have to.https://github.com/dart-lang/language/issues/155 …
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Pemuatan nampaknya mengambil sedikit masa.
Twitter mungkin melebihi kapasiti atau mengalami gangguan seketika. Cuba sekali lagi atau lawati Status Twitter untuk mendapatkan maklumat lanjut.