6 kyu
Sum of list of Integer Just's and Nothing's
120 of 148wichu
Description:
Your task is to write a function sumJusts that will take a list of Maybe Integer (PureScript: Maybe Int) elements and return a Just element with boxed value of sum of all list items.
List may contain Nothing elements. If so, treat Nothing as Just 0.
You may assume the list is nonempty. As such, your solution need not consider this case (though you could if you wanted to) - this is reflected in PureScript by the Partial type class constraint on the function signature of sumJusts.
For example:
sumJusts [Just 1, Just 2] = Just 3
sumJusts [Just 1, Just 2, Nothing] = Just 3
Fundamentals
Similar Kata:
Stats:
| Created | Sep 15, 2016 |
| Published | Sep 15, 2016 |
| Warriors Trained | 260 |
| Total Skips | 14 |
| Total Code Submissions | 370 |
| Total Times Completed | 148 |
| Haskell Completions | 120 |
| PureScript Completions | 36 |
| Total Stars | 5 |
| % of votes with a positive feedback rating | 91% of 48 |
| Total "Very Satisfied" Votes | 42 |
| Total "Somewhat Satisfied" Votes | 3 |
| Total "Not Satisfied" Votes | 3 |
| Total Rank Assessments | 11 |
| Average Assessed Rank | 6 kyu |
| Highest Assessed Rank | 4 kyu |
| Lowest Assessed Rank | 8 kyu |
