HashMap.opApply

Implements a simple left-to-right tree traversal.

  1. int opApply(int delegate(ref E) dg)
  2. int opApply(int delegate(HashType, ref E) dg)
    struct HashMap(K, E, alias hashFunc = defaultHash!K, alias less = "a < b")
    int
    opApply
    (
    scope int delegate
    (,
    ref E
    )
    dg
    )

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