takeWhile

Returns a DataFrame containing the first rows that satisfy the given predicate.

Rows are taken for as long as the predicate holds; the operation stops at the first row that does not satisfy it, and no later row is taken even if it satisfies the predicate.

The predicate is a RowFilter — a lambda that receives each DataRow as both this and it and is expected to return a Boolean value.

It allows you to define conditions using the row's values directly, including through extension properties for convenient and type-safe access.

For more information, See RowFilter on the documentation website.

This can include column groups and nested columns.

For more information: See takeWhile on the documentation website.

See also:

• take — takes a fixed number of first rows.

• takeLast — takes a fixed number of last rows.

• dropWhile — drops the first rows while the predicate holds.

• filter — keeps every row that matches the predicate.

Parameters