Ƈ - Filter
Tags: hyper , array , boolean
The resulting link's arity is the same as the consumed link's arity. Note that the arity refers to that of the resulting link, not the number of links this quick consumes.
Filter; keep items that return a truthy value when the condition is called.
If the link is dyadic, the resulting link is a dyad which applies to each element of the left argument with the same right argument each time to determine which items to keep. If the link is niladic, this will error. This is an alias for
Ðf, which is still available for backwards compatibility.
<monad/dyad>Ƈ- filter by a condition