Comments (2)
... better to leave it up to the caller to decide if unstable sort order is acceptable for their usage
Actually, re-reading the example... the set is being provided to set_intersection
, it isn't the root expression. Hmm... Let me think about that - it may not be so unreasonable that way round, though I believe there will still be element-order instability in some of the other set-function results, which I don't think we want in what are still list-namespace ops (and special-casing this method over the others would feel a bit inconsistent 🤔). Need to check what we're currently doing here in terms of stability.
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I don't think we should. It are set
operations done on "lists", not on "sets". Polars doesn't have a set type and making an exception for 1 expression is not something the IR should deal with.
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Related Issues (20)
- Ability to control the assumed century cutoff with `Expr.str.to_date` when parsing 2-digit years HOT 5
- Improve serialization of Categorical/Enum types
- Segfault / PanicException with `pl.lit` + `.slice` in a group by context
- `str.replace_many` to take a dictionary that defines a replacement mapping. HOT 8
- Different join behavior when streaming during join on different types HOT 1
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- DataFrame.vstack() deadlocks in asyncio background task HOT 2
- Panic when calling `top_k` on list-of-lists type
- Scan parquet should allow manual schema overrides (and/or should treat any `list[null]` encountered as a type to be resolved at query execution time?)
- Support sorting list-of-lists column
- Change `dt.week()` to be more consistent with `dt.year()` (Gregorian Year) HOT 1
- Deserializing list-of-null data leads to incorrect results
- Cannot instantiate Series of type Struct(List(UInt64)) with large integer value
- Aliasing Columns Names in Map_Element () with Dataclass Fields HOT 1
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- add option for `to_dummies` to respect nulls
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- Support No-op round() on Int columns HOT 1
- `sort_by("col", nulls_last=True)` does not put nulls at the end HOT 1
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