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author | crupest <crupest@outlook.com> | 2023-09-20 20:26:42 +0800 |
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committer | GitHub <noreply@github.com> | 2023-09-20 20:26:42 +0800 |
commit | f836d77e73f3ea0af45c5f71dae7268143d6d86f (patch) | |
tree | 573cfafd972106d69bef0d41ff5f270ec3c43ec2 /FrontEnd/src/utilities/array.ts | |
parent | 4a069bf1268f393d5467166356f691eb89963152 (diff) | |
parent | 901fe3d7c032d284da5c9bce24c4aaee9054c7ac (diff) | |
download | timeline-f836d77e73f3ea0af45c5f71dae7268143d6d86f.tar.gz timeline-f836d77e73f3ea0af45c5f71dae7268143d6d86f.tar.bz2 timeline-f836d77e73f3ea0af45c5f71dae7268143d6d86f.zip |
Merge pull request #1395 from crupest/dev
Refector 2023 v0.1
Diffstat (limited to 'FrontEnd/src/utilities/array.ts')
-rw-r--r-- | FrontEnd/src/utilities/array.ts | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/FrontEnd/src/utilities/array.ts b/FrontEnd/src/utilities/array.ts new file mode 100644 index 00000000..838e8744 --- /dev/null +++ b/FrontEnd/src/utilities/array.ts @@ -0,0 +1,41 @@ +export function copy_move<T>( + array: T[], + oldIndex: number, + newIndex: number, +): T[] { + if (oldIndex < 0 || oldIndex >= array.length) { + throw new Error("Old index out of range."); + } + + if (newIndex < 0) { + newIndex = 0; + } + + if (newIndex >= array.length) { + newIndex = array.length - 1; + } + + const result = array.slice(); + const [element] = result.splice(oldIndex, 1); + result.splice(newIndex, 0, element); + + return result; +} + +export function copy_insert<T>(array: T[], index: number, element: T): T[] { + const result = array.slice(); + result.splice(index, 0, element); + return result; +} + +export function copy_push<T>(array: T[], element: T): T[] { + const result = array.slice(); + result.push(element); + return result; +} + +export function copy_delete<T>(array: T[], index: number): T[] { + const result = array.slice(); + result.splice(index, 1); + return array; +} |