Squeak-dev December 2009

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97 participants
553 discussions

Box-Admins Team Report for November, 2009
by Ken Causey 02 Dec '09

02 Dec '09

The box-admins team is responsible for seeing that the community shared server is maintained and setting up any new features to be hosted on that server. For November, 2009: The last month has been very quiet in comparison to last month. The server has been purring nicely now for over 33 days. Otherwise there is nothing to report. Please go to http://www.squeak.org/Foundation/SupportSqueak/ and purchase a Squeak badge. Note that a donation here may be used for other Squeak community services including but not limited to development, development infrastructure, and promotion of Squeak. The services being hosted have continued to grow and include (but are not limited to): http://www.squeak.org/ SqueakMap - http://map.squeak.org/ http://ftp.squeak.org/ http://lists.squeakfoundation.org/ http://source.squeak.org/ http://map.squeak.org/ https://svn.squeak.org/ http://update.squeakfoundation.org/ http://wiki.squeak.org/ http://bugs.squeak.org/ and DNS services for squeak.org and squeakfoundation.org domain names. Ken

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Hash changes
by Levente Uzonyi 02 Dec '09

02 Dec '09

Hi, I uploaded the second part of Andrés' hash changes to the inbox. Every package requires a new mcm. The load order is: Collections-ul.217 "Initialization" Kernel-ul.308 "Object >> #hash" Kernel-ul.309 Kernel-ul.310 Collections-ul.218 "IdentityDictionary" Collections-ul.219 Collections-ul.220 "KeyedIdentitySet" Collections-ul.221 Collections-ul.222 "WeakIdentityKeyDictionary" Collections-ul.223 Collections-ul.224 "IdentitySet" Collections-ul.225 System-ul.185 "SystemDictionary" System-ul.186 System-ul.187 Collections-ul.226 "Cleanup" Collections-ul.227 These packages modify the following: - Object >> #hash returns an integer between 0 and 1073479680 instead of 0 and 4096, though the range is not continuous - identity-based collections use the same range extension method as Object >> #hash - SystemDictionary uses #hash instead of #identityHash - all preambles and postscripts are removed from Collections, Kernel and System packages Cheers, Levente

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Re: [squeak-dev] The Trunk: KernelTests-nice.114.mcz
by Eliot Miranda 02 Dec '09

02 Dec '09

Very nice!! On Wed, Dec 2, 2009 at 8:42 AM, <commits(a)source.squeak.org> wrote: > Nicolas Cellier uploaded a new version of KernelTests to project The Trunk: > http://source.squeak.org/trunk/KernelTests-nice.114.mcz > > ==================== Summary ==================== > > Name: KernelTests-nice.114 > Author: nice > Time: 2 December 2009, 5:42:19 am > UUID: c25e2455-4452-8641-ac22-f6150c47ea44 > Ancestors: KernelTests-ar.113 > > Tests for Float characterization messages > > =============== Diff against KernelTests-ar.113 =============== > > Item was added: > + ----- Method: FloatTest>>testCharacterization (in category > 'characterization') ----- > + testCharacterization > + > + "Test the largest finite representable floating point value" > + self assert: Float fmax successor = Float infinity. > + self assert: Float infinity predecessor = Float fmax. > + self assert: Float fmax negated predecessor = Float infinity > negated. > + self assert: Float infinity negated successor = Float fmax negated. > + > + "Test the smallest positive representable floating point value" > + self assert: Float fmin predecessor = 0.0. > + self assert: 0.0 successor = Float fmin. > + self assert: Float fmin negated successor = 0.0. > + self assert: 0.0 predecessor = Float fmin negated. > + > + "Test the relative precision" > + self assert: Float one + Float epsilon > Float one. > + self assert: Float one + Float epsilon = Float one successor. > + self assert: Float one + (Float epsilon / Float radix) = Float one. > + > + "Test maximum and minimum exponent" > + self assert: Float fmax exponent = Float emax. > + self assert: Float fminNormalized exponent = Float emin. > + Float denormalized ifTrue: [ > + self assert: Float fminDenormalized exponent = (Float emin > + 1 - Float precision)]. > + > + "Alternative tests for maximum and minimum" > + self assert: (Float radix - Float epsilon) * (Float radix raisedTo: > Float emax) = Float fmax. > + self assert: Float epsilon * (Float radix raisedTo: Float emin) = > Float fmin. > + > + "Test sucessors and predecessors" > + self assert: Float one predecessor successor = Float one. > + self assert: Float one successor predecessor = Float one. > + self assert: Float one negated predecessor successor = Float one > negated. > + self assert: Float one negated successor predecessor = Float one > negated. > + self assert: Float infinity successor = Float infinity. > + self assert: Float infinity negated predecessor = Float infinity > negated. > + self assert: Float nan predecessor isNaN. > + self assert: Float nan successor isNaN. > + > + "SPECIFIC FOR IEEE 754 double precision - 64 bits" > + self assert: Float fmax hex = '7FEFFFFFFFFFFFFF'. > + self assert: Float fminDenormalized hex = '0000000000000001'. > + self assert: Float fminNormalized hex = '0010000000000000'. > + self assert: 0.0 hex = '0000000000000000'. > + self assert: Float negativeZero hex = '8000000000000000'. > + self assert: Float one hex = '3FF0000000000000'. > + self assert: Float infinity hex = '7FF0000000000000'. > + self assert: Float infinity negated hex = 'FFF0000000000000'.! > > >

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The Trunk: KernelTests-nice.114.mcz
by commits＠source.squeak.org 02 Dec '09

02 Dec '09

Nicolas Cellier uploaded a new version of KernelTests to project The Trunk: http://source.squeak.org/trunk/KernelTests-nice.114.mcz ==================== Summary ==================== Name: KernelTests-nice.114 Author: nice Time: 2 December 2009, 5:42:19 am UUID: c25e2455-4452-8641-ac22-f6150c47ea44 Ancestors: KernelTests-ar.113 Tests for Float characterization messages =============== Diff against KernelTests-ar.113 =============== Item was added: + ----- Method: FloatTest>>testCharacterization (in category 'characterization') ----- + testCharacterization + + "Test the largest finite representable floating point value" + self assert: Float fmax successor = Float infinity. + self assert: Float infinity predecessor = Float fmax. + self assert: Float fmax negated predecessor = Float infinity negated. + self assert: Float infinity negated successor = Float fmax negated. + + "Test the smallest positive representable floating point value" + self assert: Float fmin predecessor = 0.0. + self assert: 0.0 successor = Float fmin. + self assert: Float fmin negated successor = 0.0. + self assert: 0.0 predecessor = Float fmin negated. + + "Test the relative precision" + self assert: Float one + Float epsilon > Float one. + self assert: Float one + Float epsilon = Float one successor. + self assert: Float one + (Float epsilon / Float radix) = Float one. + + "Test maximum and minimum exponent" + self assert: Float fmax exponent = Float emax. + self assert: Float fminNormalized exponent = Float emin. + Float denormalized ifTrue: [ + self assert: Float fminDenormalized exponent = (Float emin + 1 - Float precision)]. + + "Alternative tests for maximum and minimum" + self assert: (Float radix - Float epsilon) * (Float radix raisedTo: Float emax) = Float fmax. + self assert: Float epsilon * (Float radix raisedTo: Float emin) = Float fmin. + + "Test sucessors and predecessors" + self assert: Float one predecessor successor = Float one. + self assert: Float one successor predecessor = Float one. + self assert: Float one negated predecessor successor = Float one negated. + self assert: Float one negated successor predecessor = Float one negated. + self assert: Float infinity successor = Float infinity. + self assert: Float infinity negated predecessor = Float infinity negated. + self assert: Float nan predecessor isNaN. + self assert: Float nan successor isNaN. + + "SPECIFIC FOR IEEE 754 double precision - 64 bits" + self assert: Float fmax hex = '7FEFFFFFFFFFFFFF'. + self assert: Float fminDenormalized hex = '0000000000000001'. + self assert: Float fminNormalized hex = '0010000000000000'. + self assert: 0.0 hex = '0000000000000000'. + self assert: Float negativeZero hex = '8000000000000000'. + self assert: Float one hex = '3FF0000000000000'. + self assert: Float infinity hex = '7FF0000000000000'. + self assert: Float infinity negated hex = 'FFF0000000000000'.!

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The Trunk: Kernel-nice.317.mcz
by commits＠source.squeak.org 02 Dec '09

02 Dec '09

Nicolas Cellier uploaded a new version of Kernel to project The Trunk: http://source.squeak.org/trunk/Kernel-nice.317.mcz ==================== Summary ==================== Name: Kernel-nice.317 Author: nice Time: 2 December 2009, 5:38:45 am UUID: 07b501b4-4f30-564e-9645-1322d5aafa09 Ancestors: Kernel-nice.316 A faster successor/predecessor implementation thanks to suggestions of Paolo Bonzini and the help of #ulp (unit of least precision - that is the least significant bit of a Float). It works well with default IEEE754 rounding mode (round to nearest even). Don't know about alternate modes, but we don't use them right now. =============== Diff against Kernel-nice.316 =============== Item was changed: ----- Method: Float>>predecessor (in category 'truncation and round off') ----- predecessor + | ulp | - | mantissa biasedExponent | self isFinite ifFalse: [ (self isNaN or: [self negative]) ifTrue: [^self]. ^Float fmax]. self = 0.0 ifTrue: [^Float fmin negated]. + ulp := self ulp. + ^self - (0.5 * ulp) = self + ifTrue: [self - ulp] + ifFalse: [self - (0.5 * ulp)]! - mantissa := self significandAsInteger. - (mantissa isPowerOfTwo and: [self positive]) ifTrue: [mantissa := mantissa bitShift: 1]. - biasedExponent := self exponent - mantissa highBit + 1. - ^self sign * (mantissa - self sign) asFloat timesTwoPower: biasedExponent! Item was added: + ----- Method: Float>>ulp (in category 'truncation and round off') ----- + ulp + "Answer the unit of least precision of self (the power of two corresponding to last bit of mantissa)" + + | exponent | + self isFinite ifFalse: [ + self isNaN ifTrue: [^self]. + ^Float infinity]. + self = 0.0 ifTrue: [^Float fmin]. + exponent := self exponent. + ^exponent < self class emin + ifTrue: [Float fminDenormalized] + ifFalse: [Float epsilon timesTwoPower: exponent]! Item was changed: ----- Method: Float>>successor (in category 'truncation and round off') ----- successor + | ulp | - | mantissa biasedExponent | self isFinite ifFalse: [ (self isNaN or: [self positive]) ifTrue: [^self]. ^Float fmax negated]. self = 0.0 ifTrue: [^Float fmin]. + ulp := self ulp. + ^self + (0.5 * ulp) = self + ifTrue: [self + ulp] + ifFalse: [self + (0.5 * ulp)]! - mantissa := self significandAsInteger. - (mantissa isPowerOfTwo and: [self negative]) ifTrue: [mantissa := mantissa bitShift: 1]. - biasedExponent := self exponent - mantissa highBit + 1. - ^self sign * (mantissa + self sign) asFloat timesTwoPower: biasedExponent!

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The Trunk: Kernel-nice.316.mcz
by commits＠source.squeak.org 02 Dec '09

02 Dec '09

Nicolas Cellier uploaded a new version of Kernel to project The Trunk: http://source.squeak.org/trunk/Kernel-nice.316.mcz ==================== Summary ==================== Name: Kernel-nice.316 Author: nice Time: 2 December 2009, 5:34:34 am UUID: b108354a-6b8e-8b48-8c9c-fc6c8b47b84c Ancestors: Kernel-ar.315 Add the ANSI float characterization methods every other Smalltalk has but Squeak. Also add #predecessor and #successor. These changes are already in Pharo. =============== Diff against Kernel-ar.315 =============== Item was added: + ----- Method: Float>>predecessor (in category 'truncation and round off') ----- + predecessor + | mantissa biasedExponent | + self isFinite ifFalse: [ + (self isNaN or: [self negative]) ifTrue: [^self]. + ^Float fmax]. + self = 0.0 ifTrue: [^Float fmin negated]. + mantissa := self significandAsInteger. + (mantissa isPowerOfTwo and: [self positive]) ifTrue: [mantissa := mantissa bitShift: 1]. + biasedExponent := self exponent - mantissa highBit + 1. + ^self sign * (mantissa - self sign) asFloat timesTwoPower: biasedExponent! Item was added: + ----- Method: Float class>>emin (in category 'constants') ----- + emin + "Answer exponent of minimal normalized representable value" + + ^-1022! Item was added: + ----- Method: Float class>>fmax (in category 'constants') ----- + fmax + "Answer the maximum finite floating point value representable." + + ^MaxVal! Item was added: + ----- Method: Float class>>emax (in category 'constants') ----- + emax + "Answer exponent of maximal representable value" + + ^1023! Item was added: + ----- Method: Float class>>precision (in category 'constants') ----- + precision + "Answer the apparent precision of the floating point representation. + That is the maximum number of radix-based digits (bits if radix=2) representable in floating point without round off error. + Technically, 52 bits are stored in the representation, and normalized numbers have an implied leading 1 that does not need to be stored. + Note that denormalized floating point numbers don't have the implied leading 1, and thus gradually loose precision. + This format conforms IEEE 754 double precision standard." + + ^53! Item was added: + ----- Method: Float class>>fminDenormalized (in category 'constants') ----- + fminDenormalized + "Answer the minimum denormalized value representable." + + ^1.0 timesTwoPower: MinValLogBase2! Item was added: + ----- Method: Float class>>fminNormalized (in category 'constants') ----- + fminNormalized + "Answer the minimum normalized value representable." + + ^1.0 timesTwoPower: -1022! Item was added: + ----- Method: Float>>successor (in category 'truncation and round off') ----- + successor + | mantissa biasedExponent | + self isFinite ifFalse: [ + (self isNaN or: [self positive]) ifTrue: [^self]. + ^Float fmax negated]. + self = 0.0 ifTrue: [^Float fmin]. + mantissa := self significandAsInteger. + (mantissa isPowerOfTwo and: [self negative]) ifTrue: [mantissa := mantissa bitShift: 1]. + biasedExponent := self exponent - mantissa highBit + 1. + ^self sign * (mantissa + self sign) asFloat timesTwoPower: biasedExponent! Item was changed: ----- Method: Float>>truncated (in category 'truncation and round off') ----- truncated "Answer with a SmallInteger equal to the value of the receiver without its fractional part. The primitive fails if the truncated value cannot be represented as a SmallInteger. In that case, the code below will compute a LargeInteger truncated value. Essential. See Object documentation whatIsAPrimitive. " <primitive: 51> + self isFinite ifFalse: [self error: 'Cannot truncate this number']. - (self isInfinite or: [self isNaN]) ifTrue: [self error: 'Cannot truncate this number']. self abs < 2.0e16 ifTrue: ["Fastest way when it may not be an integer" - "^ (self quo: 1073741823.0) * 1073741823 + (self rem: 1073741823.0) truncated" | di df q r | + di := 1 + (SmallInteger maxVal bitShift: -1). - di := (SmallInteger maxVal bitShift: -1)+1. df := di asFloat. q := self quo: df. r := self - (q asFloat * df). + ^q * di + r truncated] - ^q*di+r truncated] ifFalse: [^ self asTrueFraction. "Extract all bits of the mantissa and shift if necess"] ! Item was added: + ----- Method: Float class>>radix (in category 'constants') ----- + radix + "Answer the radix used for internal floating point representation." + + ^2! Item was added: + ----- Method: Float class>>epsilon (in category 'constants') ----- + epsilon + "Answer difference between 1.0 and previous representable value" + + ^1.0 timesTwoPower: 1 - self precision! Item was added: + ----- Method: Float class>>denormalized (in category 'constants') ----- + denormalized + "Answer whether implementation supports denormalized numbers (also known as gradual underflow)." + + ^true! Item was added: + ----- Method: Float class>>fmin (in category 'constants') ----- + fmin + "Answer minimum positive representable value." + + ^self denormalized + ifTrue: [self fminDenormalized] + ifFalse: [self fminNormalized]!

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Daily Commit Log
by commits＠source.squeak.org 02 Dec '09

02 Dec '09

Changes to Trunk (http://source.squeak.org/trunk.html) in the last 24 hours: http://lists.squeakfoundation.org/pipermail/packages/2009-December/001915.h… Name: ST80-dtl.73 Ancestors: ST80-dtl.72 Better progress display handling and rudimentary MVC implementations for Project>>loadFromServer: Project>>storeOnServerWithProgressInfo: Project>>storeOnServerWithProgressInfoOn: ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001916.h… Name: Morphic-dtl.259 Ancestors: Morphic-dtl.258 Better progress display handling and rudimentary MVC implementations for Project>>loadFromServer: Project>>storeOnServerWithProgressInfo: Project>>storeOnServerWithProgressInfoOn: ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001917.h… Name: System-dtl.185 Ancestors: System-dtl.184 Better progress display handling and rudimentary MVC implementations for Project>>loadFromServer: Project>>storeOnServerWithProgressInfo: Project>>storeOnServerWithProgressInfoOn: ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001918.h… Name: Collections-ul.217 Ancestors: Collections-ul.216 Replace sends of #scanForEmptySlotFor: with #scanFor:. This enables atomic changes of the hash implementation. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001919.h… Name: Kernel-ul.312 Ancestors: Kernel-nice.307 Added #scaledIdentityHash. Part 1 of updating Object >> hash. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001920.h… Name: Kernel-ul.313 Ancestors: Kernel-ul.312 Part 2 of updating Object >> #hash. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001921.h… Name: Kernel-ul.314 Ancestors: Kernel-ul.313 Removed preamble. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001922.h… Name: Collections-ul.228 Ancestors: Collections-ul.217 Part 1 of IdentityDictionary hash change. Also removed previous postscript. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001923.h… Name: Collections-ul.229 Ancestors: Collections-ul.228 Part 2 of IdentityDictionary hash change. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001924.h… Name: Collections-ul.230 Ancestors: Collections-ul.229 Part 1 of KeyedIdentitySet hash change. Also removed previous preamble. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001925.h… Name: Collections-ul.231 Ancestors: Collections-ul.230 Part 2 of KeyedIdentitySet hash change. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001926.h… Name: Collections-ul.232 Ancestors: Collections-ul.231 Part 1 of WeakIdentityKeyDictionary hash change. Also removed previous preamble. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001927.h… Name: Collections-ul.233 Ancestors: Collections-ul.232 Part 2 of WeakIdentityKeyDictionary hash change. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001928.h… Name: Collections-ul.234 Ancestors: Collections-ul.233 Part 1 of IdentitySet hash change. Also removed previous preamble. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001929.h… Name: Collections-ul.235 Ancestors: Collections-ul.234 Part 2 of IdentitySet hash change. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001930.h… Name: System-ul.185 Ancestors: System-dtl.184 Part 1 of SystemDictionary hash change (use #hash instead of #identityHash) ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001931.h… Name: System-ar.186 Ancestors: System-dtl.185, System-ul.185 Merging System-ul.185: Part 1 of SystemDictionary hash change (use #hash instead of #identityHash) ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001932.h… Name: System-ar.187 Ancestors: System-ar.186, System-ul.186 Merging System-ul.186: Part 2 of SystemDictionary hash change. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001933.h… Name: System-ar.188 Ancestors: System-ar.187, System-ul.187 Merging System-ul.187: Remove preamble. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001934.h… Name: Collections-ul.236 Ancestors: Collections-ul.235 - revert #do: #associationsDo: and the senders of #scanForEmptySlotFor: - removed preamble - add grow tweak to WeakSet - rehash everything at postscript ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001935.h… Name: Collections-ul.237 Ancestors: Collections-ul.236 - remove CollectionRehashingUtility - clear postscript ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001936.h… Name: Kernel-ar.315 Ancestors: Kernel-ul.314 Future proofing: For speed and simplicity, Cog requires LargeNegativeInteger to be compact at 4 (replacing PseudoContext). Integer>>initialize now takes care of that and documents (via LPITest and LNITest) the compact class requirements of LPI and LNI. There is no actual impact except that LNIs will shave off a header word which in typical images makes no difference whatsover (LargeNegativeInteger instanceCount < 100 in a typical trunk image). ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001937.h… Name: KernelTests-ar.113 Ancestors: KernelTests-nice.112 Add tests for compact class index of LPI and LNI. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2009-December/001938.h… Name: Compiler-nice.100 Ancestors: Compiler-nice.99 Let token be ':=' when := is used for assignment. This used to make some Decompiler tests fail... http://code.google.com/p/pharo/issues/detail?id=740 =============================================

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support of various line ends in trunk
by Nicolas Cellier 01 Dec '09

01 Dec '09

1] ABOUT RECENT CHANGES IN TRUNK: st-80 line end policy was really simple (always CR). It was the best choice possible as long as staying in Smalltalk world. However, I was kind of fed-up with all the hacks for converting to/from various line end flavours, half of which not working... - Since communicating with external world is vital for my own view of Squeak - Since It is far more simple to handle the zoo of line delimiters in Kernel (CompositionScanner / DispalyScanner / String / Stream) I just added this support in trunk. Now, we should be able to import any line termination transparently in the image. For exporting, nothing changed, we still have to care, no magic here, this is driven by external applications requirements. To profit by the new possibilities, just use: - (String>>linesDo:) rather than searching indexOf: Character cr - (Stream>>nextLine) rather than upTo: Character cr There might be some LF/CR-LF support lacking here and there (there are so many #cr senders...), but that shouldn't be hard to fix. 2] IMPORTANT NOTE AND QUESTION: SocketStream>>nextLine does insist on finding a CR-LF pair. This is used in some major protocols. But I find this abusive, and would like to change the default behavior to that of Stream. This would be a nice property that a SocketStream behaves like a FileStream or an ExternalStream. Should I proceed ? Nicolas

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The Trunk: Compiler-nice.100.mcz
by commits＠source.squeak.org 01 Dec '09

01 Dec '09

Nicolas Cellier uploaded a new version of Compiler to project The Trunk: http://source.squeak.org/trunk/Compiler-nice.100.mcz ==================== Summary ==================== Name: Compiler-nice.100 Author: nice Time: 1 December 2009, 3:45:36 am UUID: 03472bb2-f89b-b040-ae9b-4e07e714b59b Ancestors: Compiler-nice.99 Let token be ':=' when := is used for assignment. This used to make some Decompiler tests fail... http://code.google.com/p/pharo/issues/detail?id=740 =============== Diff against Compiler-nice.99 =============== Item was changed: ----- Method: Scanner>>xColon (in category 'multi-character scans') ----- + xColon + "Allow := for assignment" + - xColon "Allow := for assignment by converting to #_ " aheadChar = $= ifTrue: [self step. + tokenType := #leftArrow. - tokenType _ #leftArrow. self step. + ^ token := #':=']. - ^ token _ #'_']. "Otherwise, just do what normal scan of colon would do" + tokenType := #colon. + ^ token := self step asSymbol! - tokenType _ #colon. - ^ token _ self step asSymbol!

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Updated trunk image
by Andreas Raab 01 Dec '09

01 Dec '09

Folks - After a nice batch of new stuff over the last two weeks, I've uploaded a fully updated trunk image to: http://ftp.squeak.org/trunk/Squeak3.10.2-Trunk-091128.zip Below the summary of this version. Cheers, - Andreas This is a list of the main achievements that went into the trunk image. The list is in reverse chronological order, newest additions on the top: [------------------------- 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. [------------------------- updated 11/14/09 ---------------------------] Kernel ------ Support for isolation layers has been retired. "self-evaluation" as a concept has been removed since every object can be forced to be self-evaluating by asking for its storeString. Projects -------- Project refactoring are an ongoing process. Project itself has been split into Project / MVCProject / MorphicProject such that Project itself is abstract and various requests are handled properly in the subclasses. Collections ----------- Several improvements have been added to Collections. Sets have become faster, Arrays now print in brace form by default, Dictionary>>keys return an array instead of a set. Monticello ---------- Various load-order issues have been fixed within Monticello, making loading of packages more robust. Monticello and PackageInfo have been sped up in several areas making browsing of large repositories significantly faster. Faster UTF-8 Conversions ------------------------ Generalize trick from ByteString>>#squeakToUtf8 to every converter using class instance variables. Dramatically improves performance of file operations. FaceLift -------- An adaptation of Newspeak's Facelift look has been added to Squeak under the code name of "Botox" (meaning a small set of carefully chosen injections to improve the out of the box look for Squeak). Shout ----- Shout (Syntax Hightlighting As You Type) has been added to this image. As with all new additions, it can be easily unloaded for people wanting smaller images. ToolBuilder conversion ---------------------- All the tools have been given a make-over, removing pretty much all of the interface construction code and replacing it by ToolBuilder specs. This removes a huge amount of dependencies between the tools and particular UI frameworks, and puts all the UIs on equal footing (there were several tools that were either not all or only partially supported in MVC before). New Text Editors ---------------- A complete new set of text editors (Editor, TextEditor and SmalltalkEditor) are available. They replace TextMorphEditor and break one of the last hard links between Morphic and MVC. With the new editors it will finally become possible to have Morphic be self-contained without the need to rely on portions of MVC. Morphic Text Improvements ------------------------- Morphic has now regular blinking insertion point cursors instead of the (virtually invisible) static cursor previously. In addition, various problems with mixing fonts and the heights of text have been fixed. Preference Pragmas ------------------ Preference pragmas simplify dealing with preferences by providing automatic discovery for preferences defined in your classes. No more littering Preferences; you can now define preferences local to your class and store the values in regular class variables. The preference gets automatically discovered by using the <preference:category:description:type:> pragma. Beautiful, Anti-Aliased Fonts ----------------------------- We have a new set of beautiful anti-aliased Deja Vu bitmap fonts in this image. The default sizes include 7pt (for handheld devices), 9pt (generic text, list and menu fonts) as well as 12pt (window and title fonts): Deja Vu 7pt: Regular, Bold, Italics Deja Vu 9pt: Regular, Bold, Italics Deja Vu 12pt: Regular, Bold, Italics Russian Language Support ------------------------ To input text in Russian language, install a font supporting the Cyrillic alphabet, then switch the locale accordingly: TTFileDescription installFamilyNamed: 'Arial'. Locale switchToID: (LocaleID isoLanguage: 'ru'). This will enable Russian text input, display and processing. Improved Truetype Support ------------------------- The new TTFileDescription works just like TTFontDescription but operates on the files directly on disk. This helps greatly to support the m17n efforts since we no longer load all the fonts into memory. To use the available fonts on your platform, select some text, hit Cmd-k (Alt-k) and select "More (non-portable) fonts". Full Closure Support -------------------- This is a closure converted image. With full closure support, you can finally use recursive blocks like here: fac := [:n| n > 1 ifTrue:[n * (fac value: n-1)] ifFalse:[1]]. fac value: 5. and close over temps correctly, such as here: (1 to: 10) do:[:i| WorldState addDeferredUIMessage:[Transcript cr; show: i]]. A new Development Model ----------------------- This image is being developed using a new development model described at http://board.squeak.org/2009/07/02/a-new-community-development-model/ The image itself started as Squeak3.10.2-7179-basic.image. It was then updated from http://source.squeak.org/trunk. In order to keep track of ongoing development, simply hit the 'Load Code Updates' button.

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