filter abstract method

DoubleStream filter(
  1. bool predicate(
    1. double
    )
)

Filters elements based on the given predicate.

Example

final positive = DoubleStream.of([-1.5, 2.5, -3.5, 4.5])
    .filter((d) => d > 0);

Implementation

DoubleStream filter(bool Function(double) predicate);