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blaze-textual: Fast rendering of common datatypes

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A library for efficiently rendering Haskell datatypes to bytestrings.

Note: if you use GHCi or Template Haskell, please see the README file for important details about building this package, and other packages that depend on it: https://github.com/bos/blaze-textual#readme

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Properties

Versions 0.1.0.0, 0.2.0.0, 0.2.0.1, 0.2.0.2, 0.2.0.3, 0.2.0.4, 0.2.0.5, 0.2.0.6, 0.2.0.7, 0.2.0.8, 0.2.0.9, 0.2.1.0, 0.2.2.0, 0.2.2.0, 0.2.2.1, 0.2.3, 0.2.3.1
Change log changelog.md
Dependencies base (>=4 && <5), blaze-builder (>=0.2.1.4), bytestring, ghc-prim, integer-gmp (>=0.2), old-locale, text (>=0.11.0.2), time, vector [details]
License BSD-3-Clause
Copyright Copyright 2011 MailRank, Inc.
Author Bryan O'Sullivan <bos@serpentine.com>
Maintainer Bryan O'Sullivan <bos@serpentine.com> , Andrey Prokopenko <persiantiger@yandex.ru>
Category Text
Home page http://github.com/bos/blaze-textual
Bug tracker http://github.com/bos/blaze-textual/issues
Source repo head: git clone http://github.com/bos/blaze-textual
head: hg clone http://bitbucket.org/bos/blaze-textual
Uploaded by swamp_agr at 2021-08-30T06:45:41Z

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NameDescriptionDefault
developer

operate in developer mode

Disabled
native

use slow native code for double conversion

Enabled
integer-simple

use integer-simple instead of integer-gmp

Disabled

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info

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Readme for blaze-textual-0.2.2.0

[back to package description]

Welcome to blaze-textual

blaze-textual is a fast Haskell library for rendering common Haskell datatypes in text form using the blaze-builder library.

Important note for users of GHCi and Template Haskell

To achieve excellent performance for rendering floating point numbers, this package can optionally use the double-conversion package.

Unfortunately, due to bugs in GHC, some uses of GHCi and Template Haskell can crash if the double-conversion package is used. As a result, this package's use of double-conversion is disabled by default.

If you enable use of double-conversion and are affected by these problems, you should expect the 5289 crash to look like this:

Loading package double-conversion-0.2.0.0 ... can't load .so/.DLL for: stdc++

The 5386 crash causes GHCi to die with a floating point exception (SIGFPE).

To work around these bugs, this package includes an alternative, slower, floating point conversion that is written in pure Haskell. Although it is 10 times slower than the double-conversion package, it is the default because it does not crash.

If you don't use GHCi or Template Haskell, and you want to force the use of double-conversion, you can reinstall this package by disabling the native flag with cabal:

cabal install -f-native --reinstall

Afterwards, you will also need to reinstall any downstream packages that depend on this one, e.g. the aeson JSON library:

cabal install aeson --reinstall

Join in!

We are happy to receive bug reports, fixes, documentation enhancements, and other improvements.

Please report bugs via the github issue tracker.

Master git repository:

There's also a Mercurial mirror:

(You can create and contribute changes using either git or Mercurial.)

Authors

This library is written and maintained by Bryan O'Sullivan, bos@serpentine.com.