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by wbillingsley
1461 days ago
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If you're not using macros, moving from Scala 2 to 3 is pretty easy. I have a bunch of 2d games I use in programmable learning environments. This is the commit that did a lot of the shifting from 3 to 3.0.0-RC1 https://github.com/wbillingsley/lavamaze/commit/0d9aca52e8e8... A lot of it was just trivia like "it's required to put parentheses around lambda function parameters now", and "if the function is declared with an empty arg list () rather than no arg list, you have to call it with an empty arg list rather than no arg list". If I recall, there's a compiler plugin they put out that could automatically make many of those changes, but I found it took little enough time just to do them manually that investigating the plugin wasn't necessary. An example of one of the programmable games in action:
https://theintelligentbook.com/thinkingaboutprogramming/#/ch... |
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Actually, there are compiler options to rewrite the sources to/from scala3, I have tried this in more complex projects and it worked nicely (see https://docs.scala-lang.org/scala3/guides/migration/tooling-...)
This is the link to the plugin you mentioned which is supposed to avoid the manual syntax updates but I haven't had the need to try it, like you said, most of the times the changes are trivial enough (https://docs.scala-lang.org/scala3/guides/migration/scala3-m...).
> An example of one of the programmable games in action
This comes handy to me, looks cool! For one or another reason, I ended up in this page which seems to intend hosting the same app but it doesn't work, just wanted to let you know (https://www.wbillingsley.com/lavamaze)
There is a similar nice project which I have been looking into (https://www.kogics.net/kojo).