<@U092N7GGG>: This `appendIf` is useful more broad...

# language-proposals

[cedric]

@yole: This appendIf is useful more broadly too. For example, I often need to build a list that's either (a) or (a,b) for a certain condition:

val l = buildList { 
    a
    if (condition) b
}

Without it, not much choice besides making l a var