[squeak-dev] Updated trunk image (Squeak3.11-8720-alpha.zip)
Andreas Raab
andreas.raab at gmx.de
Sat Jan 2 13:32:10 UTC 2010
Folks -
After a whole batch of changes, I'v put an updated trunk image up at
http://ftp.squeak.org/trunk/Squeak3.11-8720-alpha.zip
Loads of great new stuff in there as you can see from the summary of
changes below. Since the summary is getting a bit too long for my taste,
I'm starting to only include the three most recent updates in email - if
you want the full list please download the image and refer to the full
summary in the "What's new" window. And if people disagree with this
policy I'd be happy to change it again - I'm just trying to cut down on
the spam factor a little. So let me know what you think.
Cheers,
- Andreas
(for the full history refer to the "What's new" section in the image)
[------------------------- updated 01/02/10 ---------------------------]
NanoTraits
----------
A new traits implementation has been added. The implementation is
significantly smaller and simpler than the old version and can be
unloaded and reloaded without loss of information (i.e., traits
flattened during unload are restored during traits reloading). To unload
traits simply execute:
Trait unloadTraits.
To restore traits load the traits package from the repository at
source.squeak.org.
TextDiffBuilder
---------------
A new algorithm for producing text diffs has been added. The algorithm
is smaller, faster, and provides better results compared to the previous
implementation.
Source / Changes Files
----------------------
Sources and changes files are no longer limited to 32MB max size.
ExpandedSourceFileArray provides an implementation for source files of
arbitrary length, based on the CompiledMethodTrailer changes.
CompiledMethodTrailer
---------------------
Handling compiled method trailers for storing source code has been
generalized. The new representation deals more explicitly with various
forms of encodings (source pointer, temps-only, etc) and has room for
future extensions (i.e., retrieval from other sources).
Future Messages
---------------
Support for the future/future: keywords has been added. Future messages
enable sending messaging at a later point in time. Timed futures allow
sending messages a specific number of miliseconds into the future,
futures without arguments are executed at the earliest convenience. For
example a message like:
MyMorph>>mouseDown: event
self color: Color red.
(self future: 1000) color: Color white.
will turn the given morph red and one second later back to white.
[------------------------- updated 12/12/09 ---------------------------]
Image Version
-------------
The new version scheme is now active. The image version number is the
sum of all package versions. A stub package "Squeak-Version" has been
added to define the "base" number for the version. This image is
designated as "Squeak3.11.alpha".
Morphic
-------
New window resizers better in tone with the general UI look. A new
UserDialogBoxMorph for simple modal inform/confirm dialogs.
Files
-----
StandardFilestream now performs read-buffering, dramatically speading up
some operations like "Object compileAll" (2x improvement) as well as
various other operations (scanning change lists etc).
Numbers
-------
Implementations for Float #predecessor, #successor etc. Update to the
compact class indexes of LargePositiveInteger and LargeNegativeInteger
for Cog. Additional tests for all of the new features.
Exceptions
----------
OutOfMemory has been added as a standard exception being signaled when
an allocation fails, replacing the previous signaling of the low space
semaphore. Improved #ensure: performance avoiding remote context
manipulation (via #tempAt:put:) in the default case.
SUnit
-----
Faster execution by speeding up some low level operations (like
allTestSelectors). Fixes for thumbnail creation which would leave open
morphs around after some tests.
Kernel
------
The default hash for all objects is now a scaled identity has to avoid
extreme degradations in speed when using large numbers of objects
without explicit hash implementation in Dictionary and Set.
[------------------------- updated 11/28/09 ---------------------------]
Menu Bar
--------
Squeak now has a standard menu bar to make it easier to discover its
contents for new users, replacing the World menu as the prime source for
launching tools and other activities.
Compiler
--------
Support for literal ByteArray syntax has been added. Byte arrays can now
be written as #[1 2 3 "..."] instead of #(1 2 3) asByteArray avoiding
the need for conversion and a more compact default representation.
Numbers
-------
Some prime related changed: Integer>>isPrime is now a deterministic
test, Integer>>isProbablyPrime a probabilistic variant. Intger>>highBit
and Integer>>lowBit have been sped up significantly.
CRLF Handling
-------------
CR and LF are now treated interchangeably in rendering. Both cause a
line break and both are not displayed. Various line related methods have
been updated to deal with both CR and LF.
Collections
-----------
Dictionary is no longer a subclass of Set. HashedCollection is the new
superclass for both Set and Dictionary. Conversion of OrderedCollection
and SortedCollection to Arrays has been sped up significantly.
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