The string must be converted into a ByteString
using pack
.
If the string is a string literal, you can use the OverloadedStrings
extension. This will convert automatically the string literal into a ByteString
.
Frage
In Haskell, how can I replace an ASCII character sub-string in a ByteString
? How can I use function replace
in Data.ByteString.Search
using character strings as arguments? Are there other ways to perform sub-string replacement in a ByteString
? For example, would it make sense to convert the ByteString
to a String
, perform the string substitution using the String
, and then convert the result back to a ByteString
?
Lösung
The string must be converted into a ByteString
using pack
.
If the string is a string literal, you can use the OverloadedStrings
extension. This will convert automatically the string literal into a ByteString
.
Andere Tipps
Example to illustrate Teetoo's answer:
Prelude> :module + Data.ByteString.Char8 Data.ByteString.Search
Prelude Data.ByteString.Char8 Data.ByteString.Search> replace (pack "World") (pack "Derek") (pack "Hello, World!")
"Hello, Derek!"
Prelude Data.ByteString.Char8 Data.ByteString.Search>