Beginners February 2013

beginners@lists.squeakfoundation.org

11 participants
5 discussions

SSH question
by DeNigris Sean 25 Feb '13

25 Feb '13

I'm using expect to send commands to my seaside server from within the image: arguments := { self expectFile fullName. 'ssh'. ipAddress. username. password }. process := PipeableOSProcess command: '/usr/bin/expect' withArguments: arguments. "Must be non-blocking, or #upToEnd hangs the image" process setNonBlockingOutput. Where PipeableOSProcess class>>#command: aString withArguments: aCollection | env pwd desc instance | env := CommandShell new environment. pwd := '/'. desc := (Array with: nil with: nil with: nil). instance := PipeableOSProcess new: aString arguments: aCollection environment: env descriptors: desc workingDir: pwd errorPipelineStream: nil. ^ instance value. The problem is that I can't easily identify errors because expect delivers commands' stderr onto its stdout. I was wondering if I could do an initial login via expect, setting up to use a security key, and then use regular OSProcess (without expect), but that seems less flexible (would I ALWAYS want to use keys when you SSH? probably not). Any ideas? Thanks, Sean

1 0

New VM Question
by Kirk Fraser 21 Feb '13

21 Feb '13

Does the new VM support multiple processors? I was thinking of an 8 core. What happens? Does the image get split by 8 automatically or does one need to start 8 images to fully utilize the processor? Or would it be best to just use an old one core computer? Is there a tutorial on using sockets to communicate between cores and/or internet separated computers? Thanks, Kirk Fraser

2 1

PositionableStream>>last
by liang bing 18 Feb '13

18 Feb '13

Hi all, I am reaing Class code,PositionableStream>>last last "Return the final element in the receiver" ^ collection at: *position* why not collection at: *readLimit*? -- View this message in context: http://forum.world.st/PositionableStream-last-tp4670419.html Sent from the Squeak - Beginners mailing list archive at Nabble.com.

2 1

What is it? Squeak starts outlining frames of objects below the Hand
by Vaidotas Didžbalis 15 Feb '13

15 Feb '13

Hello, On Squeak 4.3. While using Connectors 2, current project entered into "sensitive selection mode" i.e. it starts outlining frames of objects below the Hand. Attaching picture. How to escape this? Thank you. Vaidotas [image: Įterptasis vaizdas 1]

1 0

Reset Morphic Drawing After Error
by Jeff Gonis 12 Feb '13

12 Feb '13

Hi Everyone, So when I am using Morphs in Squeak I like to instantiate a morph and then iteratively change it on the fly, having it respond to step calls, change how drawing works etc. All in all, this works pretty well and is one of my favorite ways to develop. However, one thing that does occur from time to time is that I will introduce an error that is triggered during the drawOn: call to the Morph. When this happens the morph stays instantiated in the world, but its canvas is drawn all red with a yellow "X" through it, indicating that my drawing code has failed. My question is how do I cause the drawing of the morph to be reset after I have corrected this error in the drawing code? As it stands now I just take the lazy way out and re-create the morph as a new object and continue on with my experimentation. However, if I could reset whatever drawing state needs to be reset, and have the morph continue on with the fixed code, this would be pretty great, and get me one step closer to my ideal method of development. Thanks for your help, Jeff

5 4

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

Beginners February 2013