1) The "Hello World" is just to type "Transcript show: 'Hello World'" in the playground, and then see it printed to the transcript window;
2) It's a Smalltalk family language, with minimalistic syntax, and a environment that makes easy to learn it by exploring, initially developed as a means to teach children;
3) It adopts a image-based development approach, so everything you need in terms of tooling is contained inside the system image, and available out-of-the-box. There's no need to set up a complex set of interlocking dependencies to get proper environment and tooling.
Comments
I think Pharo fits the bill:
1) The "Hello World" is just to type "Transcript show: 'Hello World'" in the playground, and then see it printed to the transcript window;
2) It's a Smalltalk family language, with minimalistic syntax, and a environment that makes easy to learn it by exploring, initially developed as a means to teach children;
3) It adopts a image-based development approach, so everything you need in terms of tooling is contained inside the system image, and available out-of-the-box. There's no need to set up a complex set of interlocking dependencies to get proper environment and tooling.
There's a MOOC at https://mooc.pharo.org/ and free books at https://books.pharo.org/
Squeak, the Smalltalk dialect from where Pharo was forked also would be a good alternative.