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- Log -----------------------------------------------------------------
commit 6d5ef3c59299bbae11cda6d54d6bf6fb69a9f44e
Author: Gregory Collins <[email protected]>
Date: Sat Feb 26 17:41:20 2011 +0100
Release 0.4.1
diff --git a/blogdata/content/2011/02/26/snap-0.4.1-released.md
b/blogdata/content/2011/02/26/snap-0.4.1-released.md
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+| title: Announcing: Snap Framework v0.4.1
+| author: Gregory Collins <[email protected]>
+| published: 2011-02-26T17:40:00+0100
+| updated: 2011-02-06T17:40:00+0100
+| summary: Release notes for Snap 0.4.1
+
+The Snap team is proud to announce the release of Snap 0.4.1, containing
+bugfixes and efficiency improvements. Here are the changes since 0.4.0:
+
+## Bugfixes
+
+ - The `MonadCatchIO` instance for the `Snap` monad was broken (this was [bug
+ #48](https://github.com/snapframework/snap-core/issues/closed#issue/48) on
+ the issue tracker), causing exceptions to leak outside of catch blocks. This
+ is now fixed. Thanks to Bryan O'Sullivan for reporting this.
+
+ - Fixed several space leaks in file upload support, one of which was fixed by
+ a new release of
+ [enumerator](http://hackage.haskell.org/package/enumerator). Thanks to John
+ Millikin for fixing the space leak in `Iteratee` bind. [CPS is
+
hard!](http://www.serpentine.com/blog/2011/02/25/cps-is-great-cps-is-terrible/)
+
+ - Our code which generated "`Set-Cookie`" headers from the `Cookie` list
+ stored in the `Response` object had the unfortunate side-effect of blowing
+ away any "`Set-Cookie`" headers users put into the response by hand.
+
+
+## Efficiency improvements
+
+ - At the suggestion of [Jasper Van der Jeugt](http://jaspervdj.be/), changed
+ the string match algorithm in our file upload code from
+
[Knuth-Morris-Pratt](http://en.wikipedia.org/wiki/Knuth%E2%80%93Morris%E2%80%93Pratt_algorithm)
+ to
+
[Boyer-Moore-Horspool](http://en.wikipedia.org/wiki/Boyer%E2%80%93Moore%E2%80%93Horspool_algorithm).
File
+ uploads now use much less CPU time, thanks Jasper!
+
+ - In `snap-server`, eliminated an unnecessary copy in our socket `recv`
calls.
+
+
+## Upcoming talk
+
+[Gregory Collins](http://gregorycollins.net/) will be speaking at [QCon
+London](http://qconlondon.com/london-2011/tracks/show_track.jsp?trackOID=424)
+on Friday, March 11 about "High-performance web applications in Haskell". The
+talk is not specifically about the Snap Framework --- although Snap will be
+discussed --- but instead will be about why Haskell is a great fit for
+high-performance web applications, with a nod to projects like
+[Happstack](http://happstack.com/),
+[Warp](http://hackage.haskell.org/package/warp), and
+[Yesod](http://docs.yesodweb.com/).
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