2020-09-27 01:27:15 +03:00
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## Property Delegation Tools (#1)
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Create a `data class` called `Flag` containing a `Boolean` called `b` with a
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default value of `false`. In `main()`, create three `var`s: `d` of type `Double`,
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`s` of type `String` and `f` of type `Flag`, all delegated to `notNull()`. For
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`d` and `f`, use explicit type declarations but for `s` use a type parameter
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for `notNull()`.
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Using `capture` from `atomictest`, try reading from `d`, `s` and `f` before
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they are initialized and validate the output using `atomictest.eq`. Then set
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`d` to `1.1`, `s` to `"yes"` and `f` to `Flag(true)` and use `eq` to verify
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2020-09-29 14:29:57 +03:00
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that they all take on the new values.
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<sub> This task doesn't contain the automatic tests,
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it's always marked as "Correct" on "Check".
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Please compare your solution with the provided one! </sub>
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