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Add lifted versions of string predicates #19

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davidanthoff opened this issue Jul 13, 2017 · 0 comments
Open

Add lifted versions of string predicates #19

davidanthoff opened this issue Jul 13, 2017 · 0 comments
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@davidanthoff
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Like startswith etc.

@davidanthoff davidanthoff added this to the Backlog milestone Jul 13, 2017
davidanthoff pushed a commit that referenced this issue Aug 18, 2017
Useful to determine automatically whether to use a NullableCategoricalArray
or a CategoricalArray. Used in particular in DataFrames, which also implement
a categorical!() variant modifying columns.

By the way, fix missing constructors for NullableCategoricalArrays which
triggered failures in the new tests (reftype wasn't preserved when calling
constructor on a NullableCategoricalArray).
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