LinkedHashMap.opApply

foreach iteration uses opApply.

  1. int opApply(int delegate(ref Value) dg)
  2. int opApply(int delegate(ref Key, ref Value) dg)
    struct LinkedHashMap(Key, Value)
    int
    opApply
    (
    scope int delegate
    (
    ref Key
    ,
    ref Value
    )
    dg
    )

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