Iterate in Julia

In Julia, we can iterate over an array using the for loop. The syntax for the for loop is as follows:

for var ∈ iter
    # block of code
end

Here, var is the loop variable that takes on each element of the iterable iter in turn, and block of code is the code that is executed once for each element of iter.

For example, let's create an array and iterate over its elements using a for loop:

# create an array
arr = [1, 2, 3, 4, 5]
# iterate over the array

for elem in arr

    println(elem)

end

This will print each element of the array on a new line.

We can also use the enumerate() function to iterate over an array and keep track of the current index:

# create an array
arr = [1, 2, 3, 4, 5]
# iterate over the array with index

for (i, elem) in enumerate(arr)

    println("The element at index $i is $elem")

end

This will print each element of the array along with its index.

We can also use a range to iterate over a subset of the array:

# create an array
arr = [1, 2, 3, 4, 5]
# iterate over a range of the array

for elem in arr[2:4]

    println(elem)

end

This will print the elements of the array at index 2, 3, and 4.