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Updated the docs for Multiple Parameter Listing #1111

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Merged
merged 2 commits into from
Aug 1, 2018
Merged

Updated the docs for Multiple Parameter Listing #1111

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1dd3952
Updated the docs for Multiple Parameter Listing
technical-harsh90 Jul 27, 2018
18a1a6e
Updated the order of my changes
technical-harsh90 Aug 1, 2018
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20 changes: 17 additions & 3 deletions _tour/multiple-parameter-lists.md
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Original file line number Diff line number Diff line change
Expand Up @@ -45,8 +45,22 @@ numbers.foldLeft(0, {(m: Int, n: Int) => m + n})
```
numbers.foldLeft(0)(_ + _)
```

Also, it allows us to fix the parameter `z` and pass around a partial function and reuse it as shown below:

Finally, `foldLeft` and `foldRight` can be used in any of the following terms,
```tut
val numbers = List(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)

numbers.foldLeft(0)((sum, item) => sum + item) // Generic Form
numbers.foldRight(0)((sum, item) => sum + item) // Generic Form

numbers.foldLeft(0)(_+_) // Curried Form
numbers.foldRight(0)(_+_) // Curried Form

(0 /: numbers)(_+_) // Used in place of foldLeft
(numbers :\ 0)(_+_) // Used in place of foldRight
```

Above statement `numbers.foldLeft(0)(_ + _)` allows us to fix the parameter `z` and pass around a partial function and reuse it as shown below:
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Don't you mean here "the statement below"?

```tut
val numbers = List(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
val numberFunc = numbers.foldLeft(List[Int]())_
Expand All @@ -64,4 +78,4 @@ print(cubes.toString()) // List(1, 8, 27, 64, 125, 216, 343, 512, 729, 1000)
```
def execute(arg: Int)(implicit ec: ExecutionContext) = ???
```