/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

0 vote116 views1 answer
How to separate elements in list python
TypeScript
4 votes108 views1 answer
Ionic toast
TypeScript
0 vote108 views1 answer
This method can provide higher level of accuarcy in cost estimation based on the given historical data
TypeScript
0 vote163 views1 answer
Flutter web keep focus on textfield
TypeScript
0 vote107 views1 answer
Flutter allow user to select text
TypeScript
27 votes109 views3 answers
Npx react typescript
TypeScript
0 vote98 views1 answer
Whats my name
TypeScript
0 vote110 views1 answer
Current and measurement physics formula
TypeScript
0 vote132 views1 answer
Python shuffle two lists together
TypeScript
0 vote109 views1 answer
Chevrons or angle brackets latex
TypeScript