Iterator.opApply

Undocumented in source. Be warned that the author may not have intended to support it.
  1. int opApply(int delegate(ApplyType) operations)
    struct Iterator(ParentType, ReturnType, string accessor)
    int
    opApply
    (
    int delegate operations
    )
  2. int opApply(int delegate(int, ApplyType) operations)

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