/TypeScript/Haskell get specific elements of a String

Haskell get specific elements of a String

onlyParenthesis :: String -> String
onlyParenthesis [] = []
onlyParenthesis (x:xs)
                 | x /= '(' && x /= ')' && x /= '[' && x /= ']' && x /= '{' && x /= '}'= onlyParenthesis xs
                 | otherwise = x : onlyParenthesis xs

Similar codes

7 votes298 views2 answers
How to download torrents in ubuntu
TypeScript
1 vote292 views2 answers
Hosts path
TypeScript
0 vote277 views1 answer
Coding Exercise: Double Time Modify this recursive program to correctly count down in increments of 2.
TypeScript
0 vote275 views1 answer
Swalert 2 show loader
TypeScript
9 votes286 views5 answers
Array of objects typescript
TypeScript
45 votes431 views5 answers
Yarn create react app typescript
TypeScript
0 vote292 views1 answer
Separate subplots in python
TypeScript
0 vote314 views1 answer
Route.component does not have any construct or call signatures - React Router with TypeScript
TypeScript
0 vote276 views2 answers
Skip test angular
TypeScript
0 vote232 views1 answer
Software for checking open ports of IP
TypeScript