💥✨ Change SequenceSet#size to count "*" and repeats#564
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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).
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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!
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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
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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).
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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