< > BotCompany Repo | #1023716 // firstKeyWithValue - reverse map lookup

JavaX fragment (include) [tags: use-pretranspiled]

Libraryless. Click here for Pure Java version (51L/1K).

static <A, B> A firstKeyWithValue(Map<A, B> map, B value) {
  if (map != null) for (Map.Entry<A, B> e : map.entrySet())
    if (eq(e.getValue(), value))
      ret e.getKey();
  null;
}

static <A, B> A firstKeyWithValue(B value, Map<A, B> map) {
  ret firstKeyWithValue(map, value);
}

Author comment

Began life as a copy of #1008062

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