patch 8.2.3848: cannot use reduce() for a string
Problem: Cannot use reduce() for a string.
Solution: Make reduce() work with a string. (Naruhiko Nishino, closes #9366)
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 6765bdc..d54523f 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -8959,9 +8959,9 @@
reduce({object}, {func} [, {initial}]) *reduce()* *E998*
{func} is called for every item in {object}, which can be a
- |List| or a |Blob|. {func} is called with two arguments: the
- result so far and current item. After processing all items
- the result is returned.
+ |String|, |List| or a |Blob|. {func} is called with two arguments:
+ the result so far and current item. After processing all
+ items the result is returned.
{initial} is the initial result. When omitted, the first item
in {object} is used and {func} is first called for the second
@@ -8972,6 +8972,7 @@
echo reduce([1, 3, 5], { acc, val -> acc + val })
echo reduce(['x', 'y'], { acc, val -> acc .. val }, 'a')
echo reduce(0z1122, { acc, val -> 2 * acc + val })
+ echo reduce('xyz', { acc, val -> acc .. ',' .. val })
<
Can also be used as a |method|: >
echo mylist->reduce({ acc, val -> acc + val }, 0)