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Applying Functions to Lists
Many computations are conveniently specified in terms of applying functions in parallel to many elements in a list. Mathematica provides a suite of elegant functional programming constructs for doing this. In Mathematica, mathematical functions are automatically taken to be "listable", so that they are always applied to every element in a list.
Map (/@) map a function over a list, at specified levels
Apply (@@, @@@) — apply a function to a list, at specified levels
MapIndexed map a function, including index information
MapAt map a function at particular positions
Scan scan over every element of a list, applying a function
    
FoldList successively apply a function, "folding in" elements from a list
ComposeList  ▪ Outer  ▪ Inner  ▪ Accumulate  ▪ Differences  ▪ Ratios
MapThread map a function across corresponding elements in multiple lists
    
Thread "thread" a function across lists that appear in its arguments
Listable attribute for any function to automatically thread over lists
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