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Adding sample to on Option docs #953

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merged 3 commits into from
Jul 26, 2018
Merged

Adding sample to on Option docs #953

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46f5d23
Adding sample to on Option docs
fabriciorissetto Jul 26, 2018
a192e02
Adding breakline removed by mistake (in case of being checked by some…
fabriciorissetto Jul 26, 2018
1bb8a5f
Splitting code snippets
fabriciorissetto Jul 26, 2018
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6 changes: 1 addition & 5 deletions modules/core/arrow-core/src/main/kotlin/arrow/core/Option.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -198,11 +198,7 @@ infix fun <T> OptionOf<T>.or(value: Option<T>): Option<T> = if (fix().isEmpty())
fix()
}

fun <T> T?.toOption(): Option<T> = if (this != null) {
Some(this)
} else {
None
}
fun <T> T?.toOption(): Option<T> = this?.let { Some(it) } ?: None
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<333333


fun <A> Boolean.maybe(f: () -> A): Option<A> =
if (this) {
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10 changes: 10 additions & 0 deletions modules/docs/arrow-docs/docs/docs/datatypes/option/README.md
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Expand Up @@ -121,6 +121,16 @@ Arrow also adds syntax to all datatypes so you can easily lift them into the con
none<String>()
```

```kotlin:ank
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Ank is our snippet compiler. It outputs the toString() of the value returned by the snippet. You can either remove :ank and hardcode the results as they are now, or split it into 2 snippets and let our Ank processor compile them ;)

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Awsome! Done 👍

val nullableValue: String? = null
nullableValue.toOption()
```

```kotlin:ank
val nullableValue: String? = "Hello"
nullableValue.toOption()
```

Arrow contains `Option` instances for many useful typeclasses that allows you to use and transform optional values

[`Functor`]({{ '/docs/typeclasses/functor/' | relative_url }})
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