Append vs push in julia

Using Append

The append function in Julia is used to add elements to an array. It takes two arguments – the array to which the element is to be added and the element itself. The append function returns a new array with the added element.

array = [1, 2, 3, 4]
element = 5
new_array = append(array, element)

In the above code, we have an array [1, 2, 3, 4] and we want to add the element 5 to it. We use the append function to achieve this. The resulting array [1, 2, 3, 4, 5] is stored in the variable new_array.

Using Push

The push! function in Julia is used to add elements to an array. It takes two arguments – the array to which the element is to be added and the element itself. The push! function modifies the original array by adding the element to it.

array = [1, 2, 3, 4]
element = 5
push!(array, element)

In the above code, we have an array [1, 2, 3, 4] and we want to add the element 5 to it. We use the push! function to achieve this. The original array is modified and becomes [1, 2, 3, 4, 5].

Comparison

Both append and push! can be used to add elements to an array in Julia. However, there are some differences between the two:

• append returns a new array with the added element, while push! modifies the original array.
• append can be used with any iterable object, while push! can only be used with arrays.
• append is generally slower than push! because it creates a new array each time it is called.

Therefore, if you want to add elements to an existing array and modify it in-place, push! is the better option. However, if you want to create a new array with the added element, append is the appropriate choice.