Skip to content
GitLab
Projects
Groups
Snippets
Help
Loading...
Help
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
A
alexandria
Project overview
Project overview
Details
Activity
Releases
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Issues
0
Issues
0
List
Boards
Labels
Service Desk
Milestones
Merge Requests
0
Merge Requests
0
CI / CD
CI / CD
Pipelines
Jobs
Schedules
Operations
Operations
Incidents
Environments
Analytics
Analytics
CI / CD
Repository
Value Stream
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Create a new issue
Jobs
Commits
Issue Boards
Open sidebar
Momchil Ivanov
alexandria
Commits
75f9136a
Commit
75f9136a
authored
Oct 30, 2011
by
Svante Carl v. Erichsen
Committed by
Nikodemus Siivola
Oct 30, 2011
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
improved COPY-ARRAY
No need to depend on the vagaries of ADJUST-ARRAY.
parent
cd158549
Changes
2
Show whitespace changes
Inline
Side-by-side
Showing
2 changed files
with
32 additions
and
16 deletions
+32
-16
arrays.lisp
arrays.lisp
+14
-16
tests.lisp
tests.lisp
+18
-0
No files found.
arrays.lisp
View file @
75f9136a
(
in-package
:alexandria
)
(
defun
copy-array
(
array
&key
(
element-type
(
array-element-type
array
))
(
defun
copy-array
(
array
&key
(
element-type
(
array-element-type
array
))
(
fill-pointer
(
and
(
array-has-fill-pointer-p
array
)
(
fill-pointer
array
)))
(
adjustable
(
adjustable-array-p
array
)))
"Returns an undisplaced copy of ARRAY, with same fill-pointer and
adjustability (if any) as the original, unless overridden by the keyword
arguments. Performance depends on efficiency of general ADJUST-ARRAY in the
host lisp -- for most cases a special purpose copying function is likely to
perform better."
(
let
((
dims
(
array-dimensions
array
)))
;; Dictionary entry for ADJUST-ARRAY requires adjusting a
;; displaced array to a non-displaced one to make a copy.
(
adjust-array
(
make-array
dims
:element-type
element-type
:fill-pointer
fill-pointer
:adjustable
adjustable
:displaced-to
array
)
dims
)))
arguments."
(
let*
((
dimensions
(
array-dimensions
array
))
(
new-array
(
make-array
dimensions
:element-type
element-type
:adjustable
adjustable
:fill-pointer
fill-pointer
)))
(
dotimes
(
i
(
array-total-size
array
))
(
setf
(
row-major-aref
new-array
i
)
(
row-major-aref
array
i
)))
new-array
))
tests.lisp
View file @
75f9136a
...
...
@@ -29,6 +29,24 @@
(
eql
(
fill-pointer
orig
)
(
fill-pointer
copy
)))))
nil
t
t
t
)
(
deftest
copy-array.3
(
let*
((
orig
(
vector
1
2
3
))
(
copy
(
copy-array
orig
)))
(
typep
copy
'simple-array
))
t
)
(
deftest
copy-array.4
(
let
((
orig
(
make-array
21
:adjustable
t
:fill-pointer
0
)))
(
dotimes
(
n
42
)
(
vector-push-extend
n
orig
))
(
let
((
copy
(
copy-array
orig
:adjustable
nil
:fill-pointer
nil
)))
(
typep
copy
'simple-array
)))
t
)
(
deftest
array-index.1
(
typep
0
'array-index
)
t
)
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
.
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment