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Line 1: {{primitive}} '''Transpose''', (a.k.a. '''flip'''), swaps the ~~leading~~ two leading axes of a 2+ dimensional rectangular array. Dialects differ in their treatment of atoms, lists, and ragged arrays. +("ab";"cd";"ef") ("ace" "bdf") Atoms in otherwise rectangular arrays are extended to the full length of the corresponding dimension: +(`a`b`c;`d) (`a`d `b`d `c`d) == Atoms and lists ==▼ ▲== Atoms and lists == Transposing a list in oK or ngn/k [[enlist]]s it. Transposing an atom enlists twice: +,0 ,,0 +0 ,,0 K4 and Kona return the argument as-is. K9 throws a rank error. ==Ragged arrays== oK and ngn/k reshape shorter rows to the length of the longest row: +(`a`b`c;`d`e) (`a`d `b`e `c`d) K9 pads shorter rows with nulls: +(`a`b`c;`d`e) (`a`d `b`e `c`)

Transpose (edit)