{"id":21304940,"url":"https://github.com/maximilianmairinger/moremaps","last_synced_at":"2025-03-15T19:26:32.931Z","repository":{"id":189773034,"uuid":"681301736","full_name":"maximilianMairinger/moreMaps","owner":"maximilianMairinger","description":"A collection of additional map-like data structures. 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Including a bidirectional map, a multi map, and a bidirectional multi map.\r\n\r\n## Installation\r\n\r\n```shell\r\n $ npm i more-maps\r\n```\r\n\r\n## Usage\r\n\r\n### BidirectionalMap\r\n\r\nA map that allows bidirectional lookup between keys and values. It extends the built-in `Map` class.\r\n\r\n```ts\r\nimport { BidirectionalMap } from \"more-maps\"\r\n\r\nconst map = new BidirectionalMap\u003cstring, number\u003e()\r\n\r\nmap.set(\"one\", 1)\r\nmap.set(\"two\", 2)\r\n\r\nconsole.log(map.get(\"one\")) // 1\r\nconsole.log(map.reverse.get(2)) // \"two\"\r\n\r\nconsole.log(map.reverse.reverse === map) // true\r\n```\r\n\r\nBe aware that if you set the same value twice to a different key, the second key will overwrite the first one in the reverse map. So make sure they do not conflict. If you want to avoid this, use the BidirectionalMultiMap.\r\n\r\n\r\n### MultiMap\r\n\r\nA map that allows multiple values per key. It stores the values in an array. It provides methods to add, retrieve, and delete values. \r\n\r\n```ts\r\nimport { MultiMap } from \"more-maps\"\r\n\r\nconst map = new MultiMap\u003cstring, number\u003e()\r\n\r\nmap.add(\"one\", 1)\r\nmap.add(\"one\", 2)\r\nmap.add(\"one\", 3)\r\nmap.add(\"two\", 4)\r\n\r\nconsole.log(map.getAll(\"one\")) // [1, 2, 3]\r\nconsole.log(map.get(\"one\")) // 1\r\nconsole.log(map.get(\"two\")) // 4\r\n\r\nmap.delete(\"one\", 2)\r\nconsole.log(map.getAll(\"one\")) // [1, 3]\r\n\r\nmap.delete(\"one\")\r\nconsole.log(map.getAll(\"one\")) // []\r\nconsole.log(map.get(\"one\")) // undefined\r\n```\r\n\r\n### BidirectionalMultiMap\r\n\r\nA bidirectional version of the MultiMap. It allows bidirectional lookup between keys and values, and also supports adding and deleting values.\r\n\r\n```ts\r\nimport { BidirectionalMultiMap } from \"more-maps\"\r\n\r\nconst map = new BidirectionalMultiMap\u003cstring, number\u003e()\r\n\r\nmap.add(\"one\", 1)\r\nmap.add(\"one\", 2)\r\nmap.add(\"two\", 3)\r\nmap.add(\"three\", 2)\r\n\r\nconsole.log(map.getAll(\"one\")) // [1, 2]\r\nconsole.log(map.reverse.getAll(2)) // [\"one\", \"three\"]\r\n\r\nmap.delete(\"one\", 2)\r\nconsole.log(map.getAll(\"one\")) // [1]\r\nconsole.log(map.reverse.getAll(2)) // [\"three\"]\r\n```\r\n\r\n## Contribute\r\n\r\nAll feedback is appreciated. Create a pull request or write an issue.","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmaximilianmairinger%2Fmoremaps","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmaximilianmairinger%2Fmoremaps","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmaximilianmairinger%2Fmoremaps/lists"}