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| <emu-clause id="sec-setdatasize" type="abstract operation"> | ||
| <h1> | ||
| SetDataSize ( | ||
| _setData_: a List of either ~empty~ or ECMAScript language values, |
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"a List" is sufficient here, but this is also fine.
michaelficarra
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Various algorithms normatively depend on "the number of elements in
_O_.[[SetData]]". But the[[SetData]]list is completely fictional: it contains~empty~tombstones for deleted elements. We need to skip those when actually using the size in an observable way, but not when using it as a bound for a loop which is indexing[[SetData]].Hopefully no implementations actually implemented the wrong thing, though it's hard to see how they could have.