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Attila Magyar 2021-06-20 00:05:21 +02:00 committed by GitHub
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@ -220,15 +220,18 @@ Lists are java.util.LinkedHashMap instances and garbage collected automatically
## Collection operations ## Collection operations
```forth ```forth
[ 1 2 3 4 ] { . } each \ iterets through the list and calls the quotation on each element \ iterets through the list and calls the quotation on each element
[ 1 2 3 4 ] { . } each
``` ```
```forth ```forth
[ 1 2 3 4 ] { odd? } filter \ selects only the odd items from the list [ 1 3 ] \ selects only the odd items from the list [ 1 3 ]
[ 1 2 3 4 ] { odd? } filter
``` ```
```forth ```forth
[ 1 2 3 4 ] { dup * } map \ transforms the list to a new list that contain the squares of the original items [ 1 4 9 16 ] \ transforms the list to a new list that contain the squares of the original items [ 1 4 9 16 ]
[ 1 2 3 4 ] { dup * } map
``` ```
```forth ```forth