In this HackerRank Currying problem solution in ruby programming Currying is a technique in which a function accepts n parameters and turns it into a sequence of n functions, each of them take 1 parameter.
Example :-
multiply_numbers = -> (x,y) do
x*y
end
doubler = multiply_numbers.curry.(2)
tripler = multiply_numbers.curry.(3)
puts doubler.(4) #8
puts tripler.(4) #12
In the above example, lambda take two parameters x, y and return the product of the two.
multiply_numbers.curry.(2) returns a lambda which takes only one parameter necessary for calculation.
Task
You are given a partially complete code. Your task is to fill in the blanks (_______).
Write a curry, which pre-fills power_function with variable base.
Problem solution.
power_function = -> (x, z) { (x) ** z } base = gets.to_i raise_to_power = power_function.curry.(base) power = gets.to_i puts raise_to_power.(power)
Second solution.
power_function = -> (x, z) { (x) ** z } base = gets.to_i raise_to_power = ->(x){power_function.(base, x)} power = gets.to_i puts raise_to_power.(power)
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