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| Module: | Maybe |
|---|---|
| Function: | maybeToList |
| Type: | Maybe a -> [a] |
| Description: | If the argument is Just, it returns a list with the Just value as its element, otherwise it returns empty list |
| Related: | fromJust, fromMaybe, listToMaybe, mapMaybe |
Input: maybeToList (lookup 3 [(1,'A'),(2,'B'),(3,'C')])
Output: "C"
Input: maybeToList (lookup 3 [(1,11),(2,22),(3,33)])
Output: [33]
Input: maybeToList (lookup 32 [(1,'A'),(2,'B'),(3,'C')])
Output: ""
Input: maybeToList (lookup 32 [(1,11),(2,22),(3,33)])
Output: []