Does this create one million lists of the 2 same s...

# announcements

[ribesg]

Does this create one million lists of the 2 same strings or is this optimized somehow? I’m used to declaring such list of accepted values as a val before but I’m not sure if it’s needed

myListWithOneMillionElements.filter { it.a in listOf("a", "b") }

[kralli]

There is currently no optimization for constant lists like in your example. This would create the constant list each time the filter is called for every element in the source list, so in your example a million times. But using val is a good solution to this problem.