Reshaping sequences
Factor handbook » The language » Collections » Sequence operations

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A repetition is a virtual sequence consisting of a single element repeated multiple times:

<repetition> ( len elt -- repetition )

Reversing a sequence:
reverse ( seq -- newseq )

A reversed is a virtual sequence presenting a reversed view of an underlying sequence:

<reversed> ( seq -- reversed )

Transposing a matrix:
flip ( matrix -- newmatrix )