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*View this file with results and syntax highlighting [here](https://mlochbaum.github.io/BQN/help/gradedown_binsdown.html).*
# Del Stile (`⍒`)
## `⍒ 𝕩`: Grade Down
Indices of `𝕩` that would sort its major cells in descending order.
a ← 1‿2‿3
⍒ a
(⍒a) ⊏ a
## `𝕨 ⍒ 𝕩`: Bins Down
Binary search for each element of `𝕩` in `𝕨`, and return the index found, if any.
`𝕨` must be sorted in descending order.
[Right Pervasive.](../doc/arithmetic.md#pervasion)
7‿5‿4‿3 ⍒ 2
7‿5‿4‿3 ⍒ 2‿6
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