When working with Julia, you may come across situations where you need to initialize an empty StaticArray. In this article, we will explore three different ways to achieve this.
Option 1: Using the `SVector` constructor
The first option is to use the `SVector` constructor to initialize an empty StaticArray. The `SVector` constructor allows you to create a StaticArray with a specified size and default values. To create an empty StaticArray, you can simply pass an empty tuple as the second argument to the `SVector` constructor.
using StaticArrays
empty_array = SVector{Float64}((), ())
This will create an empty StaticArray of type `Float64`.
Option 2: Using the `zeros` function
The second option is to use the `zeros` function to initialize an empty StaticArray. The `zeros` function creates an array filled with zeros. By specifying the size of the array as an empty tuple, you can create an empty StaticArray.
using StaticArrays
empty_array = zeros(Float64, ())
This will create an empty StaticArray of type `Float64`.
Option 3: Using the `@SVector` macro
The third option is to use the `@SVector` macro to initialize an empty StaticArray. The `@SVector` macro allows you to create a StaticArray with a specified size and default values. To create an empty StaticArray, you can simply pass an empty tuple as the second argument to the `@SVector` macro.
using StaticArrays
empty_array = @SVector Float64 ()
This will create an empty StaticArray of type `Float64`.
Out of the three options, using the `SVector` constructor is the most straightforward and readable way to initialize an empty StaticArray. It explicitly states the type of the StaticArray and does not require any additional functions or macros. Therefore, option 1 is the recommended approach.
