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A comment on Show HN: Balls – Game I’ve made while I was learning Swift.

Re:Show HN: Balls – Game I’ve made while I was learning Swift by goshx on Tuesday November 04, 2014 @12:05PM (#8557591)
That's very nice! I am in the process of learning it as well. When the balls "disappear", do you simply set them as alpha = 0 or actually remove them from the view?
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