String before: abc
arg during: abcdef
String after:  abcdef

Array before: one two
arg during: alpha two three
Array after:  alpha two

Hash before: banana = yellow, apple = red, 
arg during: banana = green, apple = red, 
Hash after: banana = green, apple = red, 

Hash before: banana = yellow, apple = red, 
arg during: cherry = red, apple = green, grape = purple, 
Hash after: banana = yellow, apple = red,