Comments (2)
The differences between the different types of Writer monads are generally not too relevant to bytestring
.
As far as the performance characteristics of the various bytestring
types goes:
- Concatenating many
StrictByteString
s orShortByteString
s with(<>)
via any sort of writer monad is likely to be very inefficient except in niche situations. - Concatenating
LazyByteString
s with(<>)
can be efficient as long as the calls are generally right-associative. But if the individualLazyByteString
s are short, the result may have a small average chunk size, which may or may not be a problem depending on how thatLazyByteString
is used.- The codensity transform (or adding a
ContT
layer) can re-associate the monadic binds, if you have many nested calls that would tend to produce inefficient left-associative(<>)
calls with a basic writer monad.
- The codensity transform (or adding a
- Concatenating
Builder
s with(<>)
is almost always at least reasonably efficient.
from bytestring.
Thanks, I'm working on a biparsing package and I have not yet, if even possible, implemented printing a differing type than the type being parsed. I'll try to figure out how to allow parsing strict or lazy ByteString and printing Builder.
Thank you for the insight.
from bytestring.
Related Issues (20)
- Compatibility with GHC's JavaScript backend HOT 1
- Overhaul Data.ByteString.Builder.RealFloat HOT 5
- Float and Double standard with precision 0 outputs incorrectly HOT 2
- Positive and Negative Zero Print Incorrect Precision
- RealFloat Zero Padded Exponent HOT 7
- Faster Printing for Known Normal and Subnormal IEEE754 Floating Point Values
- Broken links in haddocks of `ShortByteString` HOT 1
- Audit `foreign import ccall` types
- Drop support for GHCs older than 8.4 HOT 1
- Add a splice of ShortByteString builder
- 0.12.1.0 fails to build on darwin aarch64 with GHC-8.10.7 HOT 13
- Create strict bytestrings from FixedPrim with zero copy HOT 6
- Lazy `zip` is stricter than expected
- unsafeUseAsCString(Len) may return a NULL pointer. HOT 9
- Document that `Data.ByteString.Lazy.appendFile` is not threadsafe.
- Eq and Ord for Builder
- Offer conversion with `Natural`. HOT 1
- Fixed Point Rounding HOT 2
- Store a `State# RealWorld` in the ByteString HOT 3
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from bytestring.