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Data structures functional way

Deepika Sahu answered on December 29, 2022 Popularity 5/10 Helpfulness 1/10

answer Data structures functional way

Data structures functional way

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A functional data structure is (not surprisingly) operated on using only pure functions. Remember, a pure function must not change data in place or perform other side effects.
Therefore, functional data structures are by definition immutable.
For example, the empty list (written List() or Nil in Scala) is as eternal and immutable as the integer values 3 or 4. 
And just as evaluating 3 + 4 results in a new number 7 without modifying either 3 or 4, concatenating two lists together (the syntax for this is a ++ b for two lists a and b) yields a new list and leaves the two inputs unmodified.

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Contributed on Dec 29 2022

Deepika Sahu

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