I was just wondering if there is a way to work with multiple screens in Pharo or Squeak. I am just switching from VisualWorks to Pharo and am really missing this feature. I am used to having my wor...

It seems Smalltalk implementations misses an algorithm which return all the indices of a substring in a String. The most similar ones returns only one index of an element, for example : firstIndexe...

In Smalltalk, there are two terms often found within a method body: self and yourself. What is the difference between them?

In Smalltalk (and specifically Pharo/Squeak) I want to know if it is OK to leave out the "[" and "]" for the argument to messages like at:ifAbsent: if you don't need a block, like this; ^ bookTitl...

I have used pragmas in Pharo Smalltalk and have an idea about how they work and have seen examples for what they are used in Pharo. My questions are: what are pragmas conceptually, to what const...

Background In Smalltalk, if you don't excplicitly return anything then the message passing evaluates to the receiver (or "self" in the message context). For example, given this method: MyClass &...

Background Something that catches every Smalltalk newbie is that add: does not return "self" but the object being added. For example, with this code: myCollection := OrderedCollection new add:...

Currently, I am working with a Smalltalk based application server, using Visual Works. I am looking for a way to generate a UML Class Diagram from the code. I have looked up for many tools but noth...

Is there any Smalltalk parser in Squeak/Pharo which allows me to browse VisualWorks code in Squeak/Pharo ? I'm interested in reading code exported in the chunk format (not in XML). Clarification: ...

I'm looking for additional examples of using PetitParser beyond PPArithmeticParser and PPLambdaParser that are provided in the tests package and a couple of blog posts by Lukas? If anyone's w...

In Smalltalk, the system browser is the central tool for pretty much anything. Glamour seems to be a package for building general purpose browsers using a declarative scripting language. From the p...

I am attempting to read and process the contents of a csv file in smalltalk(visualworks), but I seem to be having some hard time getting the string to split into an array please. Below is code I ha...

I'm stumped. Here is my testcase. theTestArray := #(1.2 3 5.1 7). self assert: theTestArray squareOfAllElements = #(1.44 9 26.01 49). The assert should not fail. On calculating the square of eac...

Is there any example, in any Smalltalk flavour, showing how to parse a RDF file? The only package I've seen is Rikaiko with a RDFXMLReader class, but there are no references and it seems very undoc...

How can I sort a collection by two criteria in Cincom VisualWorks? Example: I have an OrderedCollection that contains persons, and want a new collection that sort the persons first by age, and th...

Given any Smalltalk flavor, how should I proceed to check if Unicode is supported? In case of not having support, how can I detect at which level is missing (VM, font, Converter, etc)?

What would be good (cross Smalltalk, mantained, documented) web frameworks or packages (in terms of fewer things to learn/adapt) to use for implementing a static web site with really few forms? .i....

I am trying to compare two strings in Smalltalk, but I seem to be doing something wrong. I keep getting this error: Unhandled Exception: Non-boolean receiver. Proceed for truth. stringOne := 'he...

For example, let's say I am adding a set of objects I created, called myClass (which contains a string) to myList and then I wish to use the list and pass it to a GUI list. Is there a way to popula...

How can I write a GIU in Squeak? I'm a Smalltalk newbie and I'm using Cincom's VisualWorks at the moment but I'd like to give Squeak a try. I see that Squeak has Morphic for graphics but for the li...