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Re: [Pharo-users] Bloc of code in tiers programming language

by TomaÅ¾ Turk

In javascript I believe is var f = function(x) { return Math.cos(x) + x; } var df = function(x) { return f(x + 1e-8) - f(x) * 1e8; } Best wishes, Tomaz ------ Original Message ------ From: "Atharva Khare" <khareatharva(a)gmail.com> To: "Any question about pharo is welcome" <pharo-users(a)lists.pharo.org> Sent: 15.5.2019 15:26:11 Subject: Re: [Pharo-users] Bloc of code in tiers programming language >Hey, > >I think in python, you use Lambda Expressions. Here is how I would do >it in python3: >import math >f = lambda x: math.cos(x) + x >d_f = lambda x: (f(x + 1e-8) - f(x)) * 1e8 > > > >On Wed, May 15, 2019 at 6:33 PM Hilaire <hilaire(a)drgeo.eu> wrote: >>Hi, >> >>We, Smalltalkers, use bloc of code as easily as we breathe air. >> >>I am writing an article on Smalltalk programming for a French >>mathematics teachers magazine. >> >>To illustrate the simplicity of Smalltalk, I would like to compare how >>the bloc of code 'f' and 'df' below will be implemented in Javascript >>and Python: >> >> >>f := [ :x | x cos + x ]. >>df := [ :x | (f value: x + 1e-8) - (f value: x) * 1e8]. >> >>Here f is a way to implement a function and df its derivate. >> >>Do some of you knows how it will be written in Javascript and Python >>with their own ad-hoc anonymous function? >> >>Thanks >> >>Hilaire >> >>-- >>Dr. Geo >>http://drgeo.eu >> >> >>

May 15, 2019

Re: [Pharo-users] Bloc of code in tiers programming language

by Atharva Khare

Hey, I think in python, you use Lambda Expressions. Here is how I would do it in python3: import math f = lambda x: math.cos(x) + x d_f = lambda x: (f(x + 1e-8) - f(x)) * 1e8 On Wed, May 15, 2019 at 6:33 PM Hilaire <hilaire(a)drgeo.eu> wrote: > Hi, > > We, Smalltalkers, use bloc of code as easily as we breathe air. > > I am writing an article on Smalltalk programming for a French > mathematics teachers magazine. > > To illustrate the simplicity of Smalltalk, I would like to compare how > the bloc of code 'f' and 'df' below will be implemented in Javascript > and Python: > > > f := [ :x | x cos + x ]. > df := [ :x | (f value: x + 1e-8) - (f value: x) * 1e8]. > > Here f is a way to implement a function and df its derivate. > > Do some of you knows how it will be written in Javascript and Python > with their own ad-hoc anonymous function? > > Thanks > > Hilaire > > -- > Dr. Geo > http://drgeo.eu > > > >

May 15, 2019

Bloc of code in tiers programming language

by Hilaire

Hi, We, Smalltalkers, use bloc of code as easily as we breathe air. I am writing an article on Smalltalk programming for a French mathematics teachers magazine. To illustrate the simplicity of Smalltalk, I would like to compare how the bloc of code 'f' and 'df' below will be implemented in Javascript and Python: f := [ :x | x cos + x ]. df := [ :x | (f value: x + 1e-8) - (f value: x) * 1e8]. Here f is a way to implement a function and df its derivate. Do some of you knows how it will be written in Javascript and Python with their own ad-hoc anonymous function? Thanks Hilaire -- Dr. Geo http://drgeo.eu

May 15, 2019

Re: [Pharo-users] TelePharo / Seamless Bitmaps are all 0s

by Alistair Grant

Hi Denis, On Wed, 15 May 2019 at 10:16, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > > Hi Alistair > > I will look when have a time. > But you can try to write a test for bitmap serialization/materialization in TostSerializationTests (if I remember correctly the name). > It will show if bitmap transport requires extra logic. If I remove Bitmap>>travelGuide (so that it inherits the default OrdinaryObjectTravelGuide instead of an empty travel guide) everything seems to work OK. This seems reasonable to me as a Bitmap's format is basically the same as an Array, which doesn't seem to require any special processing. I can add a simple test and submit a PR (in a few days time) if the change sounds OK to you. Thanks, Alistair > ÑÑ, 15 Ð¼Ð°Ñ 2019 Ð³., 8:49 Alistair Grant <akgrant0710(a)gmail.com>: >> >> Hi Denis, >> >> If I print: >> >> remotePharo evaluate: [ Array withAll: #(42 42 42) ] "==> #(42 42 42)" >> >> which is obviously correct, but: >> >> remotePharo evaluate: [ Bitmap withAll: #(42 42 42) ] >> >> gives me a bitmap with all zeroes (running it locally does the expected thing). >> >> I can see that the bitmap is being created correctly on the server, >> but by the time it gets back the values have been lost (all converted >> to 0s). If I change the Bitmap>>seamlessDefaultTransferStrategy for >> the Bitmap to #defaultByReference I can correctly access the values >> (just for debugging, by reference isn't practical for the real >> system). >> >> Any hints on where to look? >> >> Thanks again, >> Alistair >>

May 15, 2019

Re: [Pharo-users] TelePharo / Seamless Bitmaps are all 0s

by Denis Kudriashov

Hi Alistair I will look when have a time. But you can try to write a test for bitmap serialization/materialization in TostSerializationTests (if I remember correctly the name). It will show if bitmap transport requires extra logic. ÑÑ, 15 Ð¼Ð°Ñ 2019 Ð³., 8:49 Alistair Grant <akgrant0710(a)gmail.com>: > Hi Denis, > > If I print: > > remotePharo evaluate: [ Array withAll: #(42 42 42) ] "==> #(42 42 42)" > > which is obviously correct, but: > > remotePharo evaluate: [ Bitmap withAll: #(42 42 42) ] > > gives me a bitmap with all zeroes (running it locally does the expected > thing). > > I can see that the bitmap is being created correctly on the server, > but by the time it gets back the values have been lost (all converted > to 0s). If I change the Bitmap>>seamlessDefaultTransferStrategy for > the Bitmap to #defaultByReference I can correctly access the values > (just for debugging, by reference isn't practical for the real > system). > > Any hints on where to look? > > Thanks again, > Alistair > >

May 15, 2019

TelePharo / Seamless Bitmaps are all 0s

by Alistair Grant

Hi Denis, If I print: remotePharo evaluate: [ Array withAll: #(42 42 42) ] "==> #(42 42 42)" which is obviously correct, but: remotePharo evaluate: [ Bitmap withAll: #(42 42 42) ] gives me a bitmap with all zeroes (running it locally does the expected thing). I can see that the bitmap is being created correctly on the server, but by the time it gets back the values have been lost (all converted to 0s). If I change the Bitmap>>seamlessDefaultTransferStrategy for the Bitmap to #defaultByReference I can correctly access the values (just for debugging, by reference isn't practical for the real system). Any hints on where to look? Thanks again, Alistair

May 15, 2019

Re: [Pharo-users] Pharo download with wget

by Brainstorms

Which version of 'libcurl' do you have installed on your system? Due to some unfortunate history (involving naming), libcurl3 and libcurl4 cannot both reside on the same system. Try "locate libcurl.so". Does it show "libcurl.so.3" or "libcurl.so.4"? You may wish to upgrade to v4. Cheers, -Ted -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

May 14, 2019

Re: [Pharo-users] Pharo download with wget

by Ben Coman

What distribution are you using? (i.e. /etc/lsb-release) possibily related... http://forum.world.st/Can-t-load-libgit2-in-7-0-on-some-major-Linux-distros… http://forum.world.st/What-s-wrong-with-latest-Pharo-td5097766i20.html#a509… cheers, Ben On Wed, 15 May 2019 at 03:20, BrunoBB <smalltalk(a)adinet.com.uy> wrote: > Hi, > > Pharo image is created with: > wget -O- https://get.pharo.org/64 | bash > > So far so good . > > But the following sentence display an error: > ./pharo Pharo.image eval 3+4 > > It answer 7 but also show some errors: > [user@localhost linux-server-tools]$ ./pharo Pharo.image eval 3+4 > > > ioLoadModule(/home/gemstone/test/linux-server-tools/pharo-vm/lib/pharo/5.0-201901051900/libgit2.so): > libcurl-gnutls.so.4: cannot open shared object file: No such file or > directory > > ioLoadModule(/home/gemstone/test/linux-server-tools/pharo-vm/lib/pharo/5.0-201901051900/libgit2.so): > libcurl-gnutls.so.4: cannot open shared object file: No such file or > directory > > tryLoading(/home/gemstone/test/linux-server-tools/pharo-vm/lib/pharo/5.0-201901051900/ > libgit2.so/.libs/,libgit2.so): > > stat(/home/gemstone/test/linux-server-tools/pharo-vm/lib/pharo/5.0-201901051900/ > libgit2.so/.libs/) > Not a directory > External module not found > ExternalLibraryFunction(Object)>>error: > ExternalLibraryFunction(Object)>>externalCallFailed > ExternalLibraryFunction(ExternalFunction)>>invokeWithArguments: > LGitLibrary>>libgit2_init > FFICalloutAPI>>function:module: > LGitLibrary(Object)>>ffiCall: > LGitLibrary>>libgit2_init > [ self libgit2_init. > self recordInitializationSuccess ] in LGitLibrary>>initializeLibGit2 in > Block: [ self libgit2_init.... > BlockClosure>>on:do: > LGitLibrary>>initializeLibGit2 > LGitLibrary class>>startUp: > ClassSessionHandler>>startup: > [ :each | each startup: isImageStarting ] in WorkingSession>>runStartup: in > Block: [ :each | each startup: isImageStarting ] > [ aBlock value: each ] in [ :each | > [ aBlock value: each ] > on: Exception > do: [ :error | self errorHandler handleError: error ] ] in > WorkingSession>>runList:do: in Block: [ aBlock value: each ] > BlockClosure>>on:do: > [ :each | > [ aBlock value: each ] > on: Exception > do: [ :error | self errorHandler handleError: error ] ] in > WorkingSession>>runList:do: in Block: [ :each | ... > Array(SequenceableCollection)>>do: > WorkingSession>>runList:do: > WorkingSession>>runStartup: > WorkingSession>>start: > SessionManager>>launchSnapshot:andQuit: > [ isImageStarting := self launchSnapshot: save andQuit: quit. > wait signal ] in SessionManager>>snapshot:andQuit: in Block: [ > isImageStarting := self launchSnapshot: save and...etc... > [ self value. > Processor terminateActive ] in BlockClosure>>newProcess in Block: [ self > value.... > 7 > > Any idea what is going on ? > > Researching on this issue... > > regards, > bruno > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > >

May 14, 2019

Pharo download with wget

by BrunoBB

Hi, Pharo image is created with: wget -O- https://get.pharo.org/64 | bash So far so good . But the following sentence display an error: ./pharo Pharo.image eval 3+4 It answer 7 but also show some errors: [user@localhost linux-server-tools]$ ./pharo Pharo.image eval 3+4 ioLoadModule(/home/gemstone/test/linux-server-tools/pharo-vm/lib/pharo/5.0-201901051900/libgit2.so): libcurl-gnutls.so.4: cannot open shared object file: No such file or directory ioLoadModule(/home/gemstone/test/linux-server-tools/pharo-vm/lib/pharo/5.0-201901051900/libgit2.so): libcurl-gnutls.so.4: cannot open shared object file: No such file or directory tryLoading(/home/gemstone/test/linux-server-tools/pharo-vm/lib/pharo/5.0-201901051900/libgit2.so/.libs/,libgit2.so): stat(/home/gemstone/test/linux-server-tools/pharo-vm/lib/pharo/5.0-201901051900/libgit2.so/.libs/) Not a directory External module not found ExternalLibraryFunction(Object)>>error: ExternalLibraryFunction(Object)>>externalCallFailed ExternalLibraryFunction(ExternalFunction)>>invokeWithArguments: LGitLibrary>>libgit2_init FFICalloutAPI>>function:module: LGitLibrary(Object)>>ffiCall: LGitLibrary>>libgit2_init [ self libgit2_init. self recordInitializationSuccess ] in LGitLibrary>>initializeLibGit2 in Block: [ self libgit2_init.... BlockClosure>>on:do: LGitLibrary>>initializeLibGit2 LGitLibrary class>>startUp: ClassSessionHandler>>startup: [ :each | each startup: isImageStarting ] in WorkingSession>>runStartup: in Block: [ :each | each startup: isImageStarting ] [ aBlock value: each ] in [ :each | [ aBlock value: each ] on: Exception do: [ :error | self errorHandler handleError: error ] ] in WorkingSession>>runList:do: in Block: [ aBlock value: each ] BlockClosure>>on:do: [ :each | [ aBlock value: each ] on: Exception do: [ :error | self errorHandler handleError: error ] ] in WorkingSession>>runList:do: in Block: [ :each | ... Array(SequenceableCollection)>>do: WorkingSession>>runList:do: WorkingSession>>runStartup: WorkingSession>>start: SessionManager>>launchSnapshot:andQuit: [ isImageStarting := self launchSnapshot: save andQuit: quit. wait signal ] in SessionManager>>snapshot:andQuit: in Block: [ isImageStarting := self launchSnapshot: save and...etc... [ self value. Processor terminateActive ] in BlockClosure>>newProcess in Block: [ self value.... 7 Any idea what is going on ? Researching on this issue... regards, bruno -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

May 14, 2019

Re: [Pharo-users] TelePharo breaks Calypso tabs

by Alistair Grant

Thanks, Denis! That fixes it. Thanks again, Alistair On Tue, 14 May 2019 at 14:06, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > > Hi Alistair. > > We forgot update telepharo baseline for fixed calypso version. > > For now just load latest calypso from master on top of telepharo > > Ð²Ñ, 14 Ð¼Ð°Ñ 2019 Ð³., 7:54 Alistair Grant <akgrant0710(a)gmail.com>: >> >> Hi Dennis & Everyone, >> >> I'm just starting to play with TelePharo - it's really impressive. >> >> However loading either the server or client in Pharo 7 or Pharo 8 >> breaks Calypso so that I can no longer click on tabs to move between >> the Comment, Class Definition or methods. >> >> Is this a known issue? And is there a fix or workaround? >> >> >> In both Pharo 7 & 8 TelePharo was loaded with: >> >> Metacello new >> baseline: 'TelePharo'; >> repository: 'github://pharo-ide/TelePharo'; >> load: 'Server'. >> >> >> Metacello new >> baseline: 'TelePharo'; >> repository: 'github://pharo-ide/TelePharo'; >> load: 'Client'. >> >> in separate clean images downloaded 14 May 2019. >> >> OS: Ubuntu 16.04. >> >> >> Thanks! >> Alistair >>

May 14, 2019