Creating a copy of elements from a collection to an array in Julia – copyto!() Method

The copyto!() is an inbuilt function in julia which is used to copy all elements from the specified collection src to array dest.

Syntax:
copyto!(dest::AbstractArray, src)

Parameters:

• dest::AbstractArray: Specified destination array.
• src: Specified source collection.

Returns: It returns the copied elements from the specified collection src to array dest.

Example 1:

# Julia program to illustrate
# the use of copyto !() method

# Getting copied elements from the
# specified collection src to array dest
a = [1, 2, 3, 4, 5];
b = zeros(8);
copyto !(b, a);
println(b)

Output:

Example 2:

# Julia program to illustrate
# the use of copyto !() method

# Getting copied elements from the
# specified collection src to array dest
a = [1., 2., 3., 4., 5.];
b = ones(8);
copyto !(b, a);
println(b)

Output: