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Ran 17 Nov 2018 04:21PM UTC

Files 20

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Committed 17 Nov 2018 04:15PM UTC coverage: 62.206% (-0.6%) from 62.781%

Job # 3300.5

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push

travis-ci

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web-flow

Commit Message

Add fast grouping method for CategoricalArray keys (#1600)

When grouping on a single CategoricalArray column, we don't need a Dict to get group codes.
This approach cannot be used when joining, as the Dict is needed.
group_rows now handles the sorting, which allows skipping this step if the grouping
is guaranteed to be sorted (as is the case for CategoricalArray).
This mechanism can be extended in the future to handle multiple CategoricalArray keys,
or integer keys (using radix sort).

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JuliaData / DataFrames.jl / 3300 / 5
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master: 93%

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JuliaData / DataFrames.jl / 3300 / 5 93% master: 93%

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JuliaData / DataFrames.jl / 3300 / 5
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master: 93%

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