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Java web templates: xylo.collections
Stefan Endrullis edited this page Sep 16, 2018
·
3 revisions
This file contains templates for different collection types, such as List
, Set
, Map
, or Option
:
-
.toList
,.toSet
,.toMap
- convert arrays, collections, iterables, and streams to lists, sets, or maps -
.sort
,.sortBy
- sort arrays, lists, and streams (by attribute) -
.minBy
,.maxBy
- find the minimum/maximum in arrays, collections, iterables, and streams -
.groupBy
- group arrays, collections, iterables, and streams by attribute -
.exists
,.forall
- test if one/all element(s) of an array, a collection, an iterable, or a stream hold(s) a given condition -
.reverse
- reverse arrays, lists, and strings -
.concat
- concatenate arrays, collections, and streams -
.join
,.mkString
- join the elements (strings) of an array, a collection, an iterable, or a stream into one string by using a given separator -
.stream
- convert iterable to stream -
.map
- map the entries of lists, sets, and maps -
.mapKeys
- map the keys of a map -
.mapValues
- map the values of a map -
.getOrElseUpdate
- return the map value of a given key or compute it and return it -
.filter
- filter the elements of lists, sets, maps, and iterables -
.reduce
- reduce the elements of arrays, collections, and iterables -
.fold
- reduce the elements of arrays, collections, and iterables by using a neutral element (similar to Scala fold) -
.find
- find an element in arrays, collections, iterables, and streams -
.take
- take a certain number of elements from a stream -
.drop
- skip a certain number of elements from a stream -
.size
- get the length or an array -
.get
- get an element of an array by index -
.first
,.head
- get first element of a list, or an array -
.head
- get last element of a list, or an array -
.forEach
- iterate over arrays, and optionals -
.isEmpty
- null-safe isEmpty check for collections, maps and strings -
.isNotEmpty
- null-safe isNotEmpty check for collections, maps and strings -
.isBlank
- null-safe isBlank check strings -
.isNotBlank
- null-safe isNotBlank check for strings