♻️ Refactor SequenceSet#dup, #clone, and #replace #505
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This was originally part of some performance improvements. But any speedup reported by the (newly added) benchmark isn't significant. So this change is more for the semantics of these methods. Changes: * don't delegate `#initialize_clone` and `#replace` to `#initialize_dup` * call `#modifying!` and copy the string in `#replace` * don't call `#modifying!` in `#initialize_dup` or `#initialize_clone` * don't copy or build the string in `#initialize_dup`. `@string` is always frozen, so the default shallow copy is enough.
nevans
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This was originally part of some performance improvements. But any speedup reported by the (newly added) benchmark isn't significant. So this change is more for the semantics of these methods.
Changes:
#dup,#clone, and#newwith a SequenceSet input#initialize_cloneand#replaceto#initialize_dup#modifying!in#replace, but not in#initialize_dupor#initialize_clone#replace, but not in#initialize_dupor#initialize_clone.@stringis always frozen, so the default shallow copy is enough.