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patch 9.0.1515: reverse() does not work for a String

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Problem:    reverse() does not work for a String.
Solution:   Implement reverse() for a String. (Yegappan Lakshmanan,
            closes #12179)
This commit is contained in:
Yegappan Lakshmanan
2023-05-06 14:08:21 +01:00
committed by Bram Moolenaar
parent 45fcb7928a
commit 03ff1c2dde
8 changed files with 76 additions and 8 deletions
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15
runtime/doc/builtin.txt
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@@ -484,7 +484,8 @@ rename({from}, {to}) Number rename (move) file from {from} to {to}
repeat({expr}, {count}) List/Blob/String
repeat {expr} {count} times
resolve({filename}) String get filename a shortcut points to
reverse({list}) List reverse {list} in-place
reverse({obj}) List/Blob/String
reverse {obj}
round({expr}) Float round off {expr}
rubyeval({expr}) any evaluate |Ruby| expression
screenattr({row}, {col}) Number attribute at screen position
@@ -7404,11 +7405,13 @@ resolve({filename}) *resolve()* *E655*
GetName()->resolve()
reverse({object}) *reverse()*
Reverse the order of items in {object} in-place.
{object} can be a |List| or a |Blob|.
Returns {object}.
Returns zero if {object} is not a List or a Blob.
If you want an object to remain unmodified make a copy first: >
Reverse the order of items in {object}. {object} can be a
|List|, a |Blob| or a |String|. For a List and a Blob the
items are reversed in-place and {object} is returned.
For a String a new String is returned.
Returns zero if {object} is not a List, Blob or a String.
If you want a List or Blob to remain unmodified make a copy
first: >
:let revlist = reverse(copy(mylist))
< Can also be used as a |method|: >
mylist->reverse()

4
runtime/doc/usr_41.txt
View File

@@ -759,6 +759,7 @@ String manipulation: *string-functions*
strdisplaywidth() size of string when displayed, deals with tabs
setcellwidths() set character cell width overrides
getcellwidths() get character cell width overrides
reverse() reverse the order of characters in a string
substitute() substitute a pattern match with a string
submatch() get a specific match in ":s" and substitute()
strpart() get part of a string using byte index
@@ -797,7 +798,7 @@ List manipulation: *list-functions*
reduce() reduce a List to a value
slice() take a slice of a List
sort() sort a List
reverse() reverse the order of a List or Blob
reverse() reverse the order of items in a List
uniq() remove copies of repeated adjacent items
split() split a String into a List
join() join List items into a String
@@ -864,6 +865,7 @@ Floating point computation: *float-functions*
Blob manipulation: *blob-functions*
blob2list() get a list of numbers from a blob
list2blob() get a blob from a list of numbers
reverse() reverse the order of numbers in a blob
Other computation: *bitwise-function*
and() bitwise AND