-
Notifications
You must be signed in to change notification settings - Fork 26
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Jan de Muijnck-Hughes
committed
Jun 4, 2014
1 parent
992ac33
commit 23d3359
Showing
2 changed files
with
75 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,24 @@ | ||
module Koans.Tuples | ||
|
||
-- Complete the following functions | ||
|
||
firstPair : Bool | ||
firstPair = ?fillme1 == fst ("First", "Pair") | ||
|
||
secondPair : Bool | ||
secondPair = ?fillme2 == snd ("Second", "Pair") | ||
|
||
whatAmI : Vect 5 (Int, Bool) | ||
whatAmI = ?fillme3 | ||
|
||
ws : Vect 5 String | ||
ws = ["zip", "a", "dee", "doo", "dah"] | ||
|
||
is : Vect 5 Int | ||
is = ?fillme4 | ||
|
||
myFirstZip : Bool | ||
myFirstZip = zip ws is == ?fillme5 | ||
|
||
whatIsMyResult : Bool | ||
whatIsMyResult = ?fillme6 == Vect.zipWith (+) is is |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,51 @@ | ||
module Koans.HigherOrderFunctions | ||
|
||
-- Complete these functions | ||
|
||
-- Maps are used to map a function to elements in a list. | ||
myFirstMap : Bool | ||
myFirstMap = ?fillme1 == map (2*) [1..4] | ||
|
||
mySecondMap : Bool | ||
mySecondMap = [1, 4, 9, 16, 25] == map ?fillme2 [1..5] | ||
|
||
myThirdMap : Bool | ||
myThirdMap = [25, 16, 9, 4, 1] == map ?fillme3 [1..5] | ||
|
||
-- Folds are used to combine elements in a list from start to finish using a function. | ||
myFirstFold : Bool | ||
myFirstFold = foldl (+) 0 [1..4] == ?fillme4 | ||
|
||
mySecondFold : Bool | ||
mySecondFold = 5 == foldl ?fillme5 5 [1..4] | ||
|
||
|
||
-- Scans are like fold but you see the intermediate results, and then the result. | ||
myFirstScan : Bool | ||
myFirstScan = scanl (max) 5 [1,2,3,4] == ?fillme6 | ||
|
||
mySecondScan : Bool | ||
mySecondScan = scanl ?fillme7 5 [1,2,10,1] == [5,5,5,10,10] | ||
|
||
myThirdScan : Bool | ||
myThirdScan = scanl (/) 64 [4,2,4] == ?fillme8 | ||
|
||
|
||
-- TODO Add examples for scanr and foldr | ||
|
||
|
||
-- You can filter things as well. | ||
|
||
xs : List Int | ||
xs = [1,2,3,4,5,6,7,8,9,10] | ||
|
||
myFirstFilter : Bool | ||
myFirstFilter = filter (>5) xs == ?fillme15 | ||
|
||
mySecondFilter : Bool | ||
mySecondFilter = filter ?fillme16 [10,20,30,40,50,60,70,80,90,100] == xs | ||
|
||
-- You can combine functions as well | ||
|
||
myFirstCombi : Bool | ||
myFirstCombi = ["bang", "boom", "bang", "boom", "bang"] == map ?fillme17 (filter ?fillme18 xs) |