Array limitations in Go - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a fixed size array in Go?

An array in Go has a fixed size defined at the time of declaration. This size cannot be changed later.

beginner

Can you resize an array in Go after it is created?

No, arrays in Go cannot be resized after creation. You must create a new array if you need a different size.

intermediate

What happens if you try to access an index outside the array bounds in Go?

Accessing an index outside the array bounds causes a runtime panic error, stopping the program.

intermediate

Why might arrays be less flexible than slices in Go?

Arrays have fixed size and cannot grow or shrink, while slices are dynamic and can change size.

intermediate

How does Go treat arrays when passed to functions?

Arrays are passed by value, meaning a copy is made. Changes inside the function do not affect the original array.

What is the size of an array in Go after it is declared?

A Fixed and cannot be changed

B Can be increased dynamically

C Can be decreased dynamically

D Depends on the number of elements added

Arrays in Go have a fixed size defined at declaration and cannot be resized.

What happens if you access an array index that is out of range in Go?

A Returns zero value silently

B Compiles with a warning

C Causes a runtime panic error

D Automatically resizes the array

Accessing out-of-range indexes causes a runtime panic error in Go.

How are arrays passed to functions in Go?

A By value (copy)

B By pointer automatically

C By reference

D They cannot be passed

Arrays are passed by value, meaning a copy is made when passed to functions.

Which Go type is more flexible than arrays for changing size?

A Map

B Slice

C Struct

D Channel

Slices are dynamic and can grow or shrink, unlike fixed-size arrays.

Can you change the length of an array after it is created in Go?

A Yes, using built-in functions

B Only if the array is a pointer

C Yes, by appending elements

D No, arrays have fixed length

Arrays have fixed length and cannot be changed after creation.

Explain the main limitations of arrays in Go and how they affect programming.

Think about size, passing behavior, and error handling.

Compare arrays and slices in Go focusing on their limitations and flexibility.

Consider size and how they behave when passed around.