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Right Shoe (⊃) is a monadic function is nested APLs which reduces the level of nesting of an array. However, its treatment of non-scalars varies between dialects. Some dialects have it extract the argument's initial element in ravel order, while others have it combine the array's elements (requiring conforming shapes or padding with [fill element]]s). Depending on which approach is taken, it is common to use the unambiguous names First and [Mix]] for these two functions.

For a discussion of all uses of the glyph ⊃, see Right Shoe.

APL built-ins [edit]
Primitives (Timeline)	Functions
Scalar
		Monadic	Conjugate ∙ Negate ∙ Signum ∙ Reciprocal ∙ Magnitude ∙ Exponential ∙ Natural Logarithm ∙ Floor ∙ Ceiling ∙ Factorial ∙ Not ∙ Pi Times ∙ Roll ∙ Type ∙ Imaginary ∙ Square Root
		Dyadic	Add ∙ Subtract ∙ Times ∙ Divide ∙ Residue ∙ Power ∙ Logarithm ∙ Minimum ∙ Maximum ∙ Binomial ∙ Comparison functions ∙ Boolean functions (And, Or, Nand, Nor) ∙ GCD ∙ LCM ∙ Circular ∙ Complex ∙ Root
Non-Scalar
		Structural	Shape ∙ Reshape ∙ Tally ∙ Depth ∙ Ravel ∙ Enlist ∙ Table ∙ Catenate ∙ Reverse ∙ Rotate ∙ Transpose ∙ Raze ∙ Mix ∙ Split ∙ Enclose ∙ Nest ∙ Cut (K) ∙ Pair ∙ Link ∙ Partitioned Enclose ∙ Partition
		Selection	First ∙ Pick ∙ Take ∙ Drop ∙ Unique ∙ Identity ∙ Stop ∙ Select ∙ Replicate ∙ Expand ∙ Set functions (Intersection ∙ Union ∙ Without) ∙ Bracket indexing ∙ Index ∙ Cartesian Product ∙ Sort
		Selector	Index generator ∙ Grade ∙ Index Of ∙ Interval Index ∙ Indices ∙ Deal ∙ Prefix and suffix vectors
		Computational	Match ∙ Not Match ∙ Membership ∙ Find ∙ Nub Sieve ∙ Encode ∙ Decode ∙ Matrix Inverse ∙ Matrix Divide ∙ Format ∙ Execute ∙ Materialise ∙ Range
Operators	Monadic	Each ∙ Commute ∙ Constant ∙ Replicate ∙ Expand ∙ Reduce ∙ Windowed Reduce ∙ Scan ∙ Outer Product ∙ Key ∙ I-Beam ∙ Spawn ∙ Function axis
Operators	Dyadic	Bind ∙ Compositions (Compose, Reverse Compose, Beside, Withe, Atop, Over) ∙ Inner Product ∙ Determinant ∙ Power ∙ At ∙ Under ∙ Rank ∙ Depth ∙ Variant ∙ Stencil ∙ Cut ∙ Direct definition (operator)
Quad names	Index origin ∙ Comparison tolerance ∙ Migration level ∙ Atomic vector

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-#REDIRECT [[Mix]]
+{{Built-in|Right Shoe|⊃}} is a [[monadic function]] is [[Nested array model|nested]] APLs which reduces the level of nesting of an array. However, its treatment of non-scalars varies between dialects. Some dialects have it extract the argument's initial element in [[ravel order]], while others have it combine the array's elements (requiring conforming shapes or padding with [fill element]]s). Depending on which approach is taken, it is common to use the unambiguous names [[First]] and [Mix]] for these two functions.
+For a discussion of all uses of the [[glyph]] <source lang=apl inline>⊃</source>, see [[Right Shoe]].
+{{APL built-ins}}

Disclose: Difference between revisions

Revision as of 11:38, 1 May 2020

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