Collection.opApply

Undocumented in source. Be warned that the author may not have intended to support it.
  1. int opApply(int delegate(ref T) dg)
    class Collection(T)
    int
    opApply
    (
    int delegate
    (
    ref T
    )
    dg
    )
  2. int opApply(int delegate(ref int, ref T) dg)

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