💥✨ Change SequenceSet#size to count "*" and repeats
#564
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Returns the combined size of the ordered `#entries`, including any repeated numbers. When `#string` is normalized, this returns the same as `#cardinality`. Like `#cardinality`, `*` is considered to be be distinct from `2³² - 1` (the maximum 32-bit unsigned integer value).
nevans
added
enhancement
nevans
added
the
sequence-set
nevans
added a commit
that referenced
this pull request
Dec 16, 2025
When `SequenceSet#max(n)` is called with `n > cardinality`, it _should_ return a duplicate of the whole set. But, `#max(n)` is implemented using `#slice(-n..)`, and (copying the behavior of `Array`), when a slicing starts from an out-of-range index, it returns `nil`. It was using `-[count, size].min` to keep the index from going out-of-range. Prior to #564, `#size` was the same as `#count`, so it would give incorrect results when the set contains an endless range. After #564, this gives incorrect results when the ordered list contains duplicates. This change should also give a small performance boost, because it bypasses the complexity of `#slice(range)` and just calls `#dup` (or returns `self` when the set is frozen). This issue was one of the motivations for #563 (and #564), but then I forgot about the bug, so it wasn't fixed in time for 0.6.0!
nevans
added a commit
that referenced
this pull request
Dec 16, 2025
When `SequenceSet#max(n)` is called with `n > cardinality`, it _should_ return a duplicate of the whole set. But, `#max(n)` is implemented using `#slice(-n..)`, and (copying the behavior of `Array`), when a slicing starts from an out-of-range index, it returns `nil`. It was using `-[count, size].min` to keep the index from going out-of-range. Prior to #564, `#size` was the same as `#count`, so it would give incorrect results when the set contains an endless range. After #564, this gives incorrect results when the ordered list contains duplicates. This change should also give a small performance boost, because it bypasses the complexity of `#slice(range)` and just calls `#dup` (or returns `self` when the set is frozen). This issue was one of the motivations for #563 (and #564), but then I forgot about the bug, so it wasn't fixed in time for 0.6.0!
nevans
added a commit
that referenced
this pull request
Dec 17, 2025
When `SequenceSet#max(n)` is called with `n > cardinality`, it _should_ return a duplicate of the whole set. But, `#max(n)` is implemented using `#slice(-n..)`, and (copying the behavior of `Array`), when a slicing starts from an out-of-range index, it returns `nil`. It was using `-[count, size].min` to keep the index from going out-of-range. Prior to #564, `#size` was the same as `#count`, so it would give incorrect results when the set contains an endless range. After #564, this gives incorrect results when the ordered list contains duplicates. This change should also give a small performance boost, because it bypasses the complexity of `#slice(range)` and just calls `#dup` (or returns `self` when the set is frozen).
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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.
Returns the combined size of the ordered
#entries, including any repeated numbers.When
#stringis normalized, this returns the same as#cardinality. Like#cardinality,"*"is considered to be be distinct from2³² - 1(the maximum 32-bit unsigned integer value).This is a breaking change. Previously,
#sizewas an alias for#count. Now it differs in both aspects:"*"is unique"*"is 2³² - 1#cardinality#count#size#count_with_duplicates