Hello, I’m just trying to understand what String.chunk does I am using the Elixir card decks from Clever Bunny and their String deck has this:
‘’’
String.chunk(
<<?a, ?b, 0xFFFF::utf16>>,
:valid
)
‘’’
and that returns
‘’’
[“ab”, <<255, 255>>]
‘’’
Where are the 255’s coming from?
fuelen
2
The code you’ve posted has returns another result
iex(4)> String.chunk(<<?a, ?b, 0xFFF::utf16>>, :valid)
[<<97, 98, 15>>, <<255>>]
I guess it simply misses one F
and it should be
iex(10)> String.chunk(<<?a, ?b, 0xFFFF::utf16>>, :valid)
["ab", <<255, 255>>]
Oh sorry that was just a typo! I’ll fix it. What I don’t understand is how 255 is returned?
al2o3cr
4
The code above is another way to write:
String.chunk(<<?a, ?b, 255, 255>>, :valid)
255
in decimal is FF
in base-16.
2 Likes
Okay. That makes sense. Thank you.