Ruby: What is the easiest way to remove the first element from an array?

Question

Lets say I have an array

[0, 132, 432, 342, 234]

What is the easiest way to get rid of the first element? (0)

Answer 1

or a.delete_at 0

Answer 2

Use shift method

array.shift(n) => Remove first n elements from array 
array.shift(1) => Remove first element

https://ruby-doc.org/core-2.2.0/Array.html#method-i-shift

Answer 3

Use the shift method on array

>> x = [4,5,6]
=> [4, 5, 6]                                                            
>> x.shift 
=> 4
>> x                                                                    
=> [5, 6] 

If you want to remove n starting elements you can use x.shift(n)

Answer 4

You can use:

arr - [arr[0]]

or

arr - [arr.shift]

or simply

arr.shift(1)

Answer 5

[0, 132, 432, 342, 234][1..-1]
=> [132, 432, 342, 234]

So unlike shift or slice this returns the modified array (useful for one liners).