filterNot(x).isNotEmpty() is equivalent to any(!x)
c.any{it == x} is equivalent to x in c
I find future me tends to remember what I was doing faster when I use the any/none/all functions. (They also short-circuit, but the readability boost to my productivity helps more than the loop optimization)
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filter(x).isEmpty()is equivalent tonone(x)filter(x).isNotEmpty()is equivalent toany(x)filterNot(x).isEmpty()is equivalent toall(x)filterNot(x).isNotEmpty()is equivalent toany(!x)c.any{it == x}is equivalent tox in cI find future me tends to remember what I was doing faster when I use the any/none/all functions. (They also short-circuit, but the readability boost to my productivity helps more than the loop optimization)