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Function (&)SlotSequence (##)

Slot

FilledSmallSquare# represents the first argument supplied to a pure function.

FilledSmallSquare#n represents the n argument.

FilledSmallSquare# is used to represent arguments or formal parameters in pure functions of the form body& or Function[body].

FilledSmallSquare# is equivalent to Slot[1].

FilledSmallSquare#n is equivalent to Slot[n]. n must be a non-negative integer.

FilledSmallSquare#0 gives the head of the function, i.e., the pure function itself.

FilledSmallSquare See The Mathematica Book: Section 2.2.5.

Further Examples

Function (&)SlotSequence (##)