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

  • Last Updated : 01 Apr, 2020

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:

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