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* <source lang=apl inline>⍮</source> [[Pair]] (<source lang=apl inline>{⍺ ⍵}</source>) | * <source lang=apl inline>⍮</source> [[Pair]] (<source lang=apl inline>{⍺ ⍵}</source>) | ||
* <source lang=apl inline>⊇</source> [[Select]] (<source lang=apl inline>⌷⍤0 99</source>) a.k.a. "sane indexing", i.e. select major cells | * <source lang=apl inline>⊇</source> [[Select]] (<source lang=apl inline>⌷⍤0 99</source>) a.k.a. "sane indexing", i.e. select major cells | ||
* <source lang=apl inline>⍛</source> [[ | * <source lang=apl inline>⍛</source> [[Reverse Compose]] (<source lang=apl inline>{(⍺⍺ ⍺) ⍵⍵ ⍵}</source> — compare with <source lang=apl inline>∘</source> which is <source lang=apl inline>{⍺ ⍺⍺ (⍵⍵ ⍵)}</source> | ||
It also adds several unique additions from [[J]] and [[K]]: | It also adds several unique additions from [[J]] and [[K]]: |