Perl 6 provides a new control structure -- 'gather' -- that allows lists to be constructed procedurally, without the need for a temporary variable. Within the block/closure controlled by a 'gather' any call to 'take' pushes that call's argument list to an implicitly created array. 'take' returns the number of elements it took. This module implements that control structure.

At the end of the block's execution, the 'gather' returns the list of values stored in the array (in a list context) or a reference to the array (in a scalar context).