- Pharo-dev - lists.pharo.org

[Pharo-project] Pharo/Seaside as back-end for a social media app
by Oscar E A CallaÃº Aug. 30, 2012

Aug. 30, 2012

Hi all, I plan to build a social media app, initially targeted to iOS clients. I was wondering if pharo 1.4 and seaside 3.07/3.1 are enough for a back-end where at least these requirements are expected: + Rest communication (I can use Seaside-REST) + Media transmission, ie sending/retrieving Photos and Videos (What Seaside modules I can use for this?) + Database communication (I can use GlorpDBX) + Ouath2 authentification (??, I understand that CouldforkSSO is a client not a server) + Scalability, where I can easily grow from hundreds to thousands of clients. Do you think Pharo could meet that requirements or I must use something less cool :-(, such as ruby on rails. Thanks in advance. I'll really appreciate your comments. Cheers

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Re: [Pharo-project] Multiple worlds
by Marcus Denker Aug. 30, 2012

Aug. 30, 2012

On May 2, 2012, at 3:23 PM, H. Hirzel wrote: > Hello > > This issue > http://code.google.com/p/pharo/issues/detail?id=3545 > is about the feature of having multiple worlds. Status is 'Accepted'. > Accepted means accepted for thinking about, there is no commitment. > I assume it is now in Pharo 1.4. > > How can I use it. > > The code I found from Sean is > > "Add a world:" > WorldManager instance createOrSwitchToWorldNamed: 'JustAnotherWorld'. > > "Return to the default world:" > WorldManager instance createOrSwitchToWorldNamed: 'Pharo'. > > What are the proper instructions? It's a bug tracker entry. Not a package for users to use. Marcus -- Marcus Denker -- http://marcusdenker.de

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[Pharo-project] Why it takes much more time to load stuff in 2.0 comparing to 1.4?
by Igor Stasenko Aug. 30, 2012

Aug. 30, 2012

I was checking how ConfigurationOfNativeBoost behaves on 1.4 and i noticed that it loads like 3-5 times faster comparing to 2.0.. and i refusing to believe this is because of different network latency, because most time which it spends during loading in 2.0 is showing "compiling / installing" progress but not "downloading". -- Best regards, Igor Stasenko.

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[Pharo-project] failing test
by Camillo Bruni Aug. 30, 2012

Aug. 30, 2012

Can some guy have a look at that method: RPackageReadOnlyCompleteSetupTest testRemoveTaggedClasses some strange reference to B1DefinedInP1? thanks cami

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[Pharo-project] [update 2.0] #20272
by Esteban Lorenzano Aug. 30, 2012

Aug. 30, 2012

20272 ----- Issue 6607: DNU on method category change in Pharo 20269 http://code.google.com/p/pharo/issues/detail?can=2&q=6607 Issue 6613: RPackageOrganizer error on MethodRemoved announcement http://code.google.com/p/pharo/issues/detail?id=6613 Issue 6614: Changing PluggableTextMorphWithLimits (un)lock icons http://code.google.com/p/pharo/issues/detail?can=2&q=6614 Issue 6615: Fix Nautilus according to RPackage tags introduction http://code.google.com/p/pharo/issues/detail?can=2&q=6615

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[Pharo-project] The MC diff tool highligting is broken
by Igor Stasenko Aug. 30, 2012

Aug. 30, 2012

in 2.0 it highlights random portions of text, completely out of sync with real difference. and if you resize the window, it doesn't changes, it doesn't follows the text.. (i think this can be a good hint to look for a place to fix) -- Best regards, Igor Stasenko.

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[Pharo-project] Pharo Integration Process
by Camillo Bruni Aug. 30, 2012

Aug. 30, 2012

After a discussion with Ben this week I think I start my smear campaign :P Ben and I wrote almost 1 year ago an almost complete tool to maximize automatization of the integration process, yet it is still not in use. now this is very strange to me, since - you can win a lot of time by using that tool - you can reduce the errors made when publishing - with some effort you could make rollbacks of new versions as easy as one click so here mare my detailed thoughts about how the integration process should work: https://github.com/dh83/pharo-dev-text/blob/master/integration.md Since I don't have time to program on these things I concentrate myself now on the talking :P PS: My main motivation of course is to get my fixes faster integrated best cami

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[Pharo-project] integrate
by Camillo Bruni Aug. 30, 2012

Aug. 30, 2012

now if any of our core team plans to do some programming tomorrow at esug, I'd be super happy if you could integrate the latest RPackage fixes and load Metacello... currently there it is not possible to work in Pharo 2.0!!!!

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Aug. 29, 2012

Begin forwarded message: > From: Nicolas Cellier <nicolas.cellier.aka.nice(a)gmail.com> > Subject: [Vm-dev] 3 Bugs in LargeInteger primitives > Date: August 29, 2012 12:18:28 PM GMT+02:00 > To: Squeak Virtual Machine Development Discussion <vm-dev(a)lists.squeakfoundation.org> > Reply-To: Squeak Virtual Machine Development Discussion <vm-dev(a)lists.squeakfoundation.org> > > > As posted on squeak-dev > http://lists.squeakfoundation.org/pipermail/squeak-dev/2012-August/165608.h… > I found 3 bugs in LargeInteger primitives > > (1<<63) negated quo: -1. > (1<<63) negated / -1. > (1<<63) negated * -1. > > They are all related to the impossible task of taking absolute value > of INT_MIN (or more exactly it's 64 bits equivalent). > Currently, it takes the form (0 - INT_MIN) whose behaviour is > undefined according to C standards but generally answer INT_MIN. > See for example > http://stackoverflow.com/questions/2539178/why-is-abs0x80000000-0x80000000 > > Surprisingly this one works: > (1<<63) negated // -1. > > Most probably because gcc has a license to ignore undefined behaviour > and perform some optimizations that don't take overflow side effects > into account. > For example 0 - (0 - a)/b can be simplified into a/b, UB case of > INT_MIN apart... > > --------------------------------- > > Beside these bugs, when I read the code, I'm quite sure it's a nest of > future bugs because there are many other attempts to catch overflow in > post-condition (like testing that addition of two positive is negative > when an underflow occurs) that technically rely on explicitely > Undefined Behaviour (UB). > OK, by now many Arithmetic Units do behave like exploited in these > post-conditions, though it's not strictly future-proof. > But we unfortunately rely on optimizing C compilers, and its behaviour > is much more fragile than hardware... > > I invite every VM hacker to read > http://stackoverflow.com/questions/199333/best-way-to-detect-integer-overfl… > And various links like > https://www.securecoding.cert.org/confluence/display/seccode/INT32-C.+Ensur… > > For example, in large integer subtract, we have a protection against > (0 - INT_MIN) like: > y = 0 - x; > if ( y==x ) { primitiveFail(); } > an optimizing compiler having a licence to ignore INT_MIN Undefined > Behaviour case could mathematically solve the equation as x==0, y==0 > and transform code into > if( ! (y=0-x) ) { primitiveFail(); } > (directly use a jz and save a comparison) > > or if we have such branch > c = a + b; > if( a >0) { > if(b > 0) { > if (c < 0 ) { primitiveFail(); } > } > } > Again, a good compiler could remove the if( c < 0) test, since it does > not have to care about UB... > > OK, pragmatically, most of these post-condition hacks are fast and > work with some version of gcc, but think about portability (llvm ?) > and future pain (you can debug such code only at asembler level). > > Do it right > do it fast. > > Nicolas

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[Pharo-project] Stability of RPackage
by Goubier Thierry Aug. 29, 2012

Aug. 29, 2012

Hi, what is your level of confidence in RPackage / Monticello at the moment in Pharo 2.0 ? I issued a few bugs on RPackage/Nautilus and I'm now starting to understand they may have been caused by the existence of two instances of RPackageOrganizer in my image, one being clearly out of sync with my code. Has anybody noticed the same problem ? I'm now planning to rebuild an image from scratch. Issues related are 6613, 6611 and 6610. Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des SystÃ¨mes Temps RÃ©el EmbarquÃ©s 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95

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