Add warning about floating-point arithmetic to foreach
introduction
#1053
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Outdated suggestions cannot be applied.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.
Signed-off-by: 3geek14 [email protected]
Motivation for this change
On #1050, @muzimuzhi suggested it might be worth adding a warning about floating-point errors in
foreach
loops to the tutorial where they are first introduced. I think my suggested change might be a bit cryptic about what sorts of rounding errors show up, but I don't know how explicit it's worth being here, when it's spelled out in far more detail in section 88, Repeating Things: The Foreach Statement. I also added to the example code a second loop that does have a rounding error preventing the final tick from being drawn.Checklist
Please check the boxes below and signoff your commits to explicitly
state your agreement to the Developer Certificate of Origin: