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Down Arrow (↓)
↓ 𝕩: Suffixes
Suffixes of array 𝕩 along its first axis.
↓ 1‿2‿3‿4
a ← 3‿3 ⥊ ↕9
↓ a
𝕨 ↓ 𝕩: Drop
For each integer in 𝕨, drop that many elements from the beginning of each dimension of 𝕩.
Negative numbers drop from the end.
3 ↓ 1‿3‿5‿67
b ← 4‿4 ⥊ ↕16
3‿3 ↓ b
5‿5 ↓ b
3‿¯3 ↓ b