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[Pharo-project] [ANN] 10427
by StÃ©phane Ducasse Aug. 30, 2009

Aug. 30, 2009

- Issue 1089: Pragma >> #analogousCodeTo: fix - Issue 698: InvalidDirectoryError should not implement defaultAction - fixing comment of oldFileNamed:

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[Pharo-project] Fwd: [ANN] 10426
by StÃ©phane Ducasse Aug. 30, 2009

Aug. 30, 2009

[ANN] 10426 Issue 1107: Clipboard Problem on Mac build 10424 MacOSClipboard initialize. + UITheme current class beCurrent.

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[Pharo-project] [ANN] 10425
by StÃ©phane Ducasse Aug. 30, 2009

Aug. 30, 2009

Issue 1074: asOop does not reflect reality anymore'.

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[Pharo-project] could somebody comment on
by StÃ©phane Ducasse Aug. 30, 2009

Aug. 30, 2009

Issue 1065: WriteStream nextPut: has unnecessary coupling to/ performance decrease with ByteStrings http://code.google.com/p/pharo/issues/detail?id=1065

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[Pharo-project] Clipboard Problem on Mac build 10424
by James Foster Aug. 30, 2009

Aug. 30, 2009

On #10424 my image became confused with clipboard problems. Somehow, MacOSClipboard.clipboard became false when it appears that the correct value is zero (0). When attempting to fix this I found that ExternalClipboard>>#'initialize' contains the following line, which probably causes the problem: clipboard := [self createClipboard] on: Error do: [:ex | clipboard = 0] I suspect that the correct code should be: clipboard := [self createClipboard] on: Error do: [:ex | clipboard := 0] or clipboard := [self createClipboard] on: Error do: [:ex | 0]

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[Pharo-project] Complex Solutions
by Ken Dickey Aug. 29, 2009

Aug. 29, 2009

Greetings, I have released SLICE-basic-Complex to PharoInbox and created added ISSUE # 1097. I believe this proposal addresses most of the concerns I have seen. Thanks again for your review and helpful comments! A brief discussion follows. -KenD ===================================== The SLICE-basic-Complex package (re)adds Complex objects to the Pharo Beta 1 image. YOU MUST LOAD the SLICE-remove-Complex package BEFORE LOADING THIS PACKAGE !! ==PROBLEMS== In mathematics, type Complex is a superset of type Real, but in Pharo the class Complex is unrelated to subclasses of Number. This causes some common expectations to be disappointed. In particular, the following patterns break down: [1] If (A=a) and (B=b) and (A<B) then (a<b) [2] A squared sqrt = A [3] A isNumber => (A class) isKindOf: Number [4] Pharo users and code have expectations that (-1 sqrt) causes an exception. [1] | A a B b | A := 0. a := A + 0i. B := 1. b := B asComplex. A = a. "true" B = b. "true" A < B. "true" a < b. "ERROR" [2] 1i squared. "-1 + 0i" 1i squared sqrt. "ERROR" 1i squared real sqrt. "ERROR" [3] (1.2 + (1/2)i) isNumber. "true" (1.2 + (1/2)i) class isKindOf: Number. "false" In particular, isNumber is used in a number of low-level methods which would not deal well with complex numbers. E.g. FloatArray>> *= anObject ^anObject isNumber ifTrue:[self primMulScalar: anObject asFloat] ifFalse:[self primMulArray: anObject] ==SOLUTIONS== [A] SLICE-remove-Complex Removing the Complex code gives more traditional Smalltalk expectations. In particular this conservative approach yields the best code backward compatability because Complex is a relatively recent addition to Squeak and was not present in many older Smalltalk implementations. In particular, problems [1][2][3] cannot arise. [B] SLICE-basic-Complex [1] is fixed by adding a "formal" method to Complex with selector #< which only compares real numbers (those whose imaginary component is zero). [2] is addressed by keeping Complex objects disjoint from Numbers. Explicit coercion is required 1i squared asComplex sqrt -> 1i -4 asComplex sqrt -> 2i The examples shown above continue to yield exceptions. [3] Complex objects are NOT numbers, but objects with number-like behavior. Complex instances answer false to isNumber. There is a isNumberOrComplex predicate which is used in the Number>>= methods in place of isNumber so that the double dispatch coercions work as expected with Numbers and Complex instances. Note that the basicComplex package also adds the hyperbolic trig functions to Numbers. -KenDickey [Ken dot Dickey at Whidbey dot Com]

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[Pharo-project] Events, announcements, etc.
by Schwab,Wilhelm K Aug. 29, 2009

Aug. 29, 2009

Hello all, I know there has been a fair amount of discussion of event mechanisms; I have not been able to follow all of it, and have probably forgotten most of what I did manage to absorb. That said, I _think_ I am fairly flexible as long as there is some way to trigger events and get messages sent to interested parties. Dolphin calls uses selectors such as #trigger: and #trigger:with:. Pharo has methods called #triggerEvent:, etc. Is that done for a specific reason? Am I walking into any traps by forwarding them to #trigger: and friends? Bill

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[Pharo-project] [ANN] 10424
by Damien Cassou Aug. 29, 2009

Aug. 29, 2009

- Issue 1094: Notification in compiler by Colin StÃ©phane & Damien -- Damien Cassou http://damiencassou.seasidehosting.st "Lambdas are relegated to relative obscurity until Java makes them popular by not having them." James Iry

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Aug. 29, 2009

- Issue 1077: ColorForm fromUser - Issue 405: Demo mode is unusable + Freezing after update fixed :) Stef and Damien Starting the ESUG 2009 pharo sprint

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[Pharo-project] [update] 10420
by Adrian Lienhard Aug. 29, 2009

Aug. 29, 2009

- Issue 838: Make mouse buttons mapping platform dependent - Issue 405: Demo mode is unusable - Issue 1053: Transcript updates from foreground process not displayed in Transcript window - Issue 1063: Class var order in Monticello (bogus dirty packages) - Issue 1019: 0006579: String>>#findLastOccuranceOfString:startingAt: isBuggedWhen: [substring first=substring last (now with deprecation of old method) - Issue 1087: tallyIt nows trigger a complete profiling (also renamed tally it to profile it) - Browser label: do not print 'System Browser: <Class>' but only '<Class>' - Disable window animation for closing 35 issues left for milestone 1.0. BTW: Yesterday, Pharo was on Y Combinator Hacker News: "Pharo: a Smalltalk VM that doesn't look like a toy out of the box" (http://news.ycombinator.com/item?id=787363 ) ___________________ http://www.adrian-lienhard.ch/

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