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| author | zeertzjq <zeertzjq@outlook.com> | 2024-02-08 19:07:31 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-02-08 19:07:31 +0800 |
| commit | 2a7c4aca422f99f3bd3a38425b660b94b5518469 (patch) | |
| tree | 631959a9813dfd7435f45658f59a487f8207702c | |
| parent | b162adbb7ca4f980e938a4a06a49218a9ed496cf (diff) | |
| download | rneovim-2a7c4aca422f99f3bd3a38425b660b94b5518469.tar.gz rneovim-2a7c4aca422f99f3bd3a38425b660b94b5518469.tar.bz2 rneovim-2a7c4aca422f99f3bd3a38425b660b94b5518469.zip | |
vim-patch:b8170143c8f8 (#27387)
runtime(doc): further improve docs about List/Blob += operator
closes: vim/vim#13990
https://github.com/vim/vim/commit/b8170143c8f8a115b5be59a94d10f931d3cd567c
| -rw-r--r-- | runtime/doc/eval.txt | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt index 6f16f2ddfb..ef416fe56f 100644 --- a/runtime/doc/eval.txt +++ b/runtime/doc/eval.txt @@ -252,12 +252,15 @@ List concatenation ~ *list-concatenation* Two lists can be concatenated with the "+" operator: > :let longlist = mylist + [5, 6] -A list can be concatenated with another one in place using the "+=" operator or |extend()|: > + :let longlist = [5, 6] + mylist +To prepend or append an item, turn it into a list by putting [] around it. + +A list can be concatenated with another one in-place using |:let+=| or +|extend()|: > :let mylist += [7, 8] :call extend(mylist, [7, 8]) - -To prepend or append an item, turn the item into a list by putting [] around -it. To change a list in-place, refer to |list-modification| below. +< +See |list-modification| below for more about changing a list in-place. Sublist ~ @@ -376,8 +379,7 @@ To change part of a list you can specify the first and last item to be modified. The value must at least have the number of items in the range: > :let list[3:5] = [3, 4, 5] -To add items to a List in-place, you can use the += operator -|list-concatenation|: > +To add items to a List in-place, you can use |:let+=| (|list-concatenation|): > :let listA = [1, 2] :let listA += [3, 4] < @@ -697,12 +699,15 @@ This calls Doit() with 0x11, 0x22 and 0x33. Blob concatenation ~ - + *blob-concatenation* Two blobs can be concatenated with the "+" operator: > :let longblob = myblob + 0z4455 + :let longblob = 0z4455 + myblob +< +A blob can be concatenated with another one in-place using |:let+=|: > :let myblob += 0z6677 - -To change a blob in-place see |blob-modification| below. +< +See |blob-modification| below for more about changing a blob in-place. Part of a blob ~ @@ -745,6 +750,18 @@ To change part of a blob you can specify the first and last byte to be modified. The value must have the same number of bytes in the range: > :let blob[3:5] = 0z334455 +To add items to a Blob in-place, you can use |:let+=| (|blob-concatenation|): > + :let blobA = 0z1122 + :let blobA += 0z3344 +< +When two variables refer to the same Blob, changing one Blob in-place will +cause the referenced Blob to be changed in-place: > + :let blobA = 0z1122 + :let blobB = blobA + :let blobB += 0z3344 + :echo blobA + 0z11223344 +< You can also use the functions |add()|, |remove()| and |insert()|. @@ -1893,6 +1910,8 @@ This does NOT work: > :let {var} ..= {expr1} Like ":let {var} = {var} .. {expr1}". These fail if {var} was not set yet and when the type of {var} and {expr1} don't fit the operator. + `+=` modifies a |List| or a |Blob| in-place instead of + creating a new one. :let ${env-name} = {expr1} *:let-environment* *:let-$* |