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cuDF User Guide
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Polars GPU engine
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legacy (25.12)

nightly (26.04)stable (26.02)legacy (25.12)

cuDF User Guide
cudf.pandas
Polars GPU engine
pylibcudf documentation
libcudf documentation
Developer Guide

GitHub
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Section Navigation

API reference
10 Minutes to cuDF and Dask cuDF
Comparison of cuDF and Pandas
Supported Data Types
Input / Output
- Input / Output
- Working with JSON data
Working with missing data
GroupBy
Overview of User Defined Functions with cuDF
Interoperability between cuDF and CuPy
Options
Performance comparisons
- Performance comparison
Pandas Compatibility Notes
Copy-on-write
Memory Profiling
Breaking changes for pandas 2 in cuDF 24.04+

cuDF User Guide
API reference
GroupBy
cudf.core.groupby.SeriesGroupBy.ffill

cudf.core.groupby.SeriesGroupBy.ffill#

SeriesGroupBy.ffill(limit=None)[source]#

Forward fill NA values.

Parameters:

limitint, default None: Unsupported

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