groups - Factor Documentation

groups
Factor handbook » The language » Collections » Sequence operations » Groups and clumps

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Vocabulary
grouping

Class description
Instances are virtual sequences whose elements are disjoint fixed-length subsequences of an underlying sequence. Groups are mutable and resizable if the underlying sequence is mutable and resizable, respectively.

New groups are created by calling <groups>.

See also
clumps, circular-clumps

Definition

USING: grouping.private ;

IN: grouping

TUPLE: groups < chunking ;

Methods

USING: accessors grouping grouping.private kernel math
math.order sequences ;

M: groups group@
[ n>> [ * dup ] keep + ] [ seq>> ] bi [ length min ] keep ;
inline

USING: accessors grouping kernel math sequences ;

M: groups length
[ seq>> length ] [ n>> ] bi [ + 1 - ] keep /i ; inline

USING: accessors grouping kernel math sequences ;

M: groups set-length [ n>> * ] [ seq>> ] bi set-length ; inline