Circle with Lower Right Quadrant (`◶`)

`𝔽◶𝕘 𝕩`, `𝕨 𝔽◶𝕘 𝕩`: Choose

Apply 𝔽 to the arguments and use the result to pick (⊑) a function from list 𝕘. Apply the picked function to the arguments.

    F ← ⊢◶+‿-‿÷‿×

    F 0
0

    F 1
¯1

    F 2
0.5

    F 3
1