public class MapFrame<K,V> extends HashMap<K,V>
AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>| 构造器和说明 |
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MapFrame() |
| 限定符和类型 | 方法和说明 |
|---|---|
<T> MapFrame<K,T> |
avg(String avgColumn) |
<T> MapFrame<K,T> |
concat(String concatColumn) |
<T> MapFrame<K,T> |
count() |
MapFrame<K,MapFrame<Object,ListFrame>> |
groupBy(String column) |
<T> MapFrame<K,T> |
max(String maxColumn) |
<T> MapFrame<K,T> |
min(String minColumn) |
<T> MapFrame<K,T> |
sum(String sumColumn) |
Map<K,Double> |
toHashMap() |
clear, clone, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, forEach, get, getOrDefault, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, valuesequals, hashCode, toStringCopyright © 2022. All rights reserved.