Add lazy evaluation setting #3083
Draft
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR is stab at #953 and takes a different approach from #2907. It introduces a "lazy" setting, which, if set, makes all variable assignment lazy. This means that you don't need to annotate individual variables as lazy. If we did this, then we would probably also have to introduce an
eagerkeyword or similar, to force evaluation of assignments which are relied on for side effects.