How can I uppercase each element of an array?

Question

How can I turn an array of elements into uppercase? Expected output would be:

[\"Monday\", \"Tuesday\", \"Wednesday\", \"Thursday\", \"Friday\"]  
=> [\"M         


        

Answer 1

In your example, replace 'each' with 'map'.

While 'each' iterates through your array, it doesn't create a new array containing the values returned by the block.