Slice vs Arrays

Performance

• Slice operations are cheap!
• Slicing: Creates a new slice header.
• Assigning a Slice to another Slice or, passing it to a function: Only copies the slice header.
• Slice header has a fixed size and it doesn't change even if we have got millions of elements.
• Array can be expensive as compared to Slice.
• Assigning an array to another array or passing it to a function: Copies all the elements of it.

See also

• Go - Maps
• Attaching Method to any type
• Go Conditionals - switch
• Error handling intro
• Error handling intro