Problem: UPPERCASE

Code: UPPERCASE/tails_1644297643

Nibbles version: 0.2 | 0.21 | 0.22 | 0.23 | 0.24 | 0.25 | 1.00

Format: Compact | Simple | +Type | Table | JSON | .nbl (DeBruijn) | .nbl (names)

. (map):[chr] 
    @ (= fstLine):[chr] 
    `) (to uppercase):chr <--arg( A:chr ) 
        $ (= A):chr