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Fix BEGINNING and END examples to use setval.

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This commit is contained in:
Christopher O'Donnell 2016-06-11 01:09:30 -04:00
parent ef9e11aadd
commit 8edddc3cd6
1 changed files with 10 additions and 11 deletions
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21
List-of-Navigators.md
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@ -30,32 +30,31 @@
### BEGINNING
`BEGINNING` navigates to the empty subsequence before the beginning of a collection. Useful with `transform` to add values onto the beginning of a sequence. Returns a lazy sequence.
`BEGINNING` navigates to the empty subsequence before the beginning of a collection. Useful with `setval` to add values onto the beginning of a sequence. Returns a lazy sequence.
```clojure
=> (transform [BEGINNING] (fn [_] '(0 1)) (range 2 7))
=> (setval [BEGINNING] '(0 1) (range 2 7))
(0 1 2 3 4 5 6)
=> (transform [BEGINNING] (fn [_] [0 1]) (range 2 7))
=> (setval [BEGINNING] [0 1] (range 2 7))
(0 1 2 3 4 5 6)
=> (transform [BEGINNING] (fn [_] {0 1}) (range 2 7))
=> (setval [BEGINNING] {0 1} (range 2 7))
([0 1] 2 3 4 5 6)
=> (transform [BEGINNING] (fn [_] {:foo :baz}) {:foo :bar})
=> (setval [BEGINNING] {:foo :baz} {:foo :bar})
([:foo :baz] [:foo :bar])
```
### END
`END` navigates to the empty subsequence after the end of a collection. Useful with `transform` to add values onto the end of a sequence. Returns a lazy sequence.
`END` navigates to the empty subsequence after the end of a collection. Useful with `setval` to add values onto the end of a sequence. Returns a lazy sequence.
```clojure
=> (transform [END] (fn [_] '(5 6)) (range 5))
=> (setval [END] '(5 6) (range 5))
(0 1 2 3 4 5 6)
=> (transform [END] (fn [_] [5 6]) (range 5))
=> (setval [END] [5 6] (range 5))
(0 1 2 3 4 5 6)
=> (transform [END] (fn [_] {5 6}) (range 5))
=> (setval [END] {5 6} (range 5))
(0 1 2 3 4 [5 6])
=> (transform [END] (fn [_] {:foo :baz}) {:foo :bar})
=> (setval [END] {:foo :baz} {:foo :bar})
([:foo :bar] [:foo :baz])
```