As well as range checks with chars

# advent-of-code

[adamratzman]

As well as range checks with chars

[David Whittaker]

how did you range check the hair color (it was # followed by 6 hex chars)?

[David Whittaker]

oh || - duh

[adamratzman]

found["hcl"]!!.substring(found["hcl"]!!.length - 6).all { it in '0'..'9' || it in 'a'..'f' }

[adamratzman]

yep! haha

[adamratzman]

excuse the found["hcl"]!!.length - 6, legit thought # meant an arbitrary number at first, not an actual hashtag

[David Whittaker]

oh I need to remember the .all - nice

[David Whittaker]

that was your alternative to when?

[adamratzman]

all and any are such useful functions!

[adamratzman]

yep 😂