HashMap.opApply

Undocumented in source. Be warned that the author may not have intended to support it.
  1. int opApply(int delegate(ref Value) del)
    struct HashMap(Key, Value, Key nullKey = Key.max)
    int
    opApply
    (
    int delegate
    (
    ref Value
    )
    del
    )
  2. int opApply(int delegate(in ref Value) del)
  3. int opApply(int delegate(in ref Key, ref Value) del)
  4. int opApply(int delegate(in ref Key, in ref Value) del)

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