blocks: no warnings when connecting 'incompatible' blocks
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 25/100
- Issue type
- Feature
- Clarity
- Needs clarification
- Activity status
- Stale
- Tech stack
- javascript, python
- Domain
- embedded-iot, frontend
Research direction
The issue names no files, tests, or entry points. Start by reproducing the incompatible-block example in the browser and on the micro:bit, then investigate the current Blockly/Python type-handling behavior. Done would require an agreed approach that gives immediate type-mismatch feedback or inserts safe conversions.
Written by the indexing model from the issue text.
Description
(This one probably isn't trivial, as I think it's partially a blockly/Python limitation)
One of the things that blocks is quite good at is avoid syntax errors.
However, our current implementation doesn't protect the user from type error as well as it could.
For example, the following code fails as soon as it is run on the micro:bit
PXT gives slightly more useful feedback:
Do we have a way of giving more immediate feedback to users about type mismatches? Or even better, perhaps (although it's spooky action at a distance) automatically inserting the required conversion so it 'just works'?
- Dominant language
- JavaScript
- Stars
- 201
- Forks
- 126
- PR merge metrics
- No merged PRs in 30d
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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