Monadic Grade Down means

Grade Down

      ⍒ 33 11 44 66 22
4 3 1 5 2

      names←'Joe' 'Sue' 'Sam'
      ages←34 22 25

      names[⍒ages]
┌───┬───┬───┐
│Joe│Sam│Sue│
└───┴───┴───┘ 

      ⍒ 'ABC' ⎕NULL ⍬ ¯3j4 'A'
1 5 4 2 3

Dyadic Grade Down means

Dyadic Grade Down

Provide collating sequence for character data.

      ⍒ 'Banana'
3 5 2 4 6 1

      'an' ⍒ 'Banana'
1 3 5 2 4 6

Language Elements