Function Return in Julia

In Julia, to return a value from a method or function, you can use the return keyword followed by the value you want to return. Here are some examples:

Example 1: A function that returns the sum of two numbers

function add(x, y)
    return x + y
end
result = add(2, 3) # result is 5

Explanation: The add function takes two arguments x and y, and returns their sum using the return keyword.

Example 2: A method that returns the maximum value from an array

function findmax(arr)
    max_val = arr[1]
    for val in arr
        if val > max_val
            max_val = val
        end
    end
    return max_val
end
array = [1, 4, 2, 9, 5]

result = findmax(array) # result is 9

Explanation: The findmax method takes an array arr as input, iterates through it to find the maximum value max_val, and returns it using the return keyword.

Note: In Julia, you can also omit the return keyword at the end of a function or method, and the last evaluated expression will be returned by default. For example, the add function from Example 1 can also be written as:

function add(x, y)
    x + y
end

Both versions of the function are equivalent and will return the same result.