At our company, we develop our GLASS apps in Pharo and then deploy to a GLASS repository on one of our servers, so we sometimes need to copy model objects from one environment to the other. One of our applications also performs regular imports from a third-party database, so we fetch it into a 32-bit Squeak [...]
Entries Tagged as ‘Smalltalk’
January 27, 2009
Button Graphic Generator in VisualWorks/Cairo
On one of our projects, our customer wanted us to use some pretty buttons instead of the standard browser widgets. He’s not a graphic designer, but he’s got a good eye and he mocked something up in Apple’s Pages program. Then I implemented his design in VisualWorks using the Cairo vector graphics library and Pango [...]
August 27, 2008
Mold: Form Validation for Seaside
A long time ago, I asked about systems for form validation that aren’t “model-based”. By “model-based validation”, I mean that the rules for whether a certain sort of input is acceptable are declared in (or attached to) a domain model that the form is operating on. This is the way that ActiveRecord (Rails) and Magritte (Seaside) [...]
December 6, 2007
Seaside Presentation at 3CLUG
Travis Griggs and I will be giving a Seaside presentation titled “Lay Rails to REST” for the Tri-Cities Linux Users Group this coming Saturday (December 8th, 2007). If you’re in southeastern Washington state and interested in learning more about Seaside, and how it compares to Rails in particular, stop by West 248 at the WSU [...]
February 12, 2007
My Full-Circle Journey Back to Smalltalk
I suppose it’s time to tell my story. I was a Smalltalk zealot in the late 90’s, but I left it behind when I started my own business. I’ve now come full-circle, and I’m finding once again that Smalltalk is the best tool for most of the programming work I do.
I learned Smalltalk programming from [...]
February 8, 2007
Identity and Equality in Ruby and Smalltalk
One important concept in object-oriented languages is the difference between equality and identity. The concept isn’t complicated, but the English words we use to talk about it are imprecise. The thesaurus says that “identity” and “equality” are synonyms. So let’s back up and make sure we’re being clear on the concepts.
We often talk about variables [...]
