Performance/Strings: Difference between revisions
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too much. In this case, you can instead use packed strings. There are a | too much. In this case, you can instead use packed strings. There are a | ||
number of options: | number of options: | ||
* The standard Data.PackedString type | |||
* One of the newer packed string libraries, for example [http://www.cse.unsw.edu.au/~dons/fps.html FastPackedString] | |||
* Unboxed arrays of Word8 or Char | |||
* Ptrs to foreign malloced Word8 buffers | |||
The packed string libraries have the benefit over arrays of Word8 or | The packed string libraries have the benefit over arrays of Word8 or | ||
Char types, in that the provide the usual list-like operations. | Char types, in that the provide the usual list-like operations. | ||
Revision as of 19:37, 17 February 2006
| Haskell Performance Resource
Constructs: Techniques: |
Strings
Sometimes the cost of representing strings as lists of Char can be too much. In this case, you can instead use packed strings. There are a number of options:
- The standard Data.PackedString type
- One of the newer packed string libraries, for example FastPackedString
- Unboxed arrays of Word8 or Char
- Ptrs to foreign malloced Word8 buffers
The packed string libraries have the benefit over arrays of Word8 or Char types, in that the provide the usual list-like operations.