{"id":3298,"date":"2020-01-29T09:58:26","date_gmt":"2020-01-29T08:58:26","guid":{"rendered":"https:\/\/solidt.eu\/site\/?p=3298"},"modified":"2023-05-05T08:02:24","modified_gmt":"2023-05-05T07:02:24","slug":"javascript-set-object","status":"publish","type":"post","link":"https:\/\/solidt.eu\/site\/javascript-set-object\/","title":{"rendered":"Javascript Set object, Hashset, Dictionary (Typescript)"},"content":{"rendered":"\n<p>A collections of unique values <\/p>\n\n\n\n<div style=\"height: 250px; position:relative; margin-bottom: 50px;\" class=\"wp-block-simple-code-block-ace\"><pre class=\"wp-block-simple-code-block-ace\" style=\"position:absolute;top:0;right:0;bottom:0;left:0\" data-mode=\"javascript\" data-theme=\"monokai\" data-fontsize=\"14\" data-lines=\"Infinity\" data-showlines=\"true\" data-copy=\"false\">const set = new Set(['1', '2', '3', '4', '4']);\n\nfor (let item of set) {\n  console.log(`${ item }`);\n}\nset.add('5')\nset.size\nset.has('4')\nset.delete('4')\nset.clear();\nset.forEach(x => console.log(x))<\/pre><\/div>\n\n\n\n<p>It is also possible to use an object as dictionary, with a small helper function<\/p>\n\n\n\n<div style=\"height: 250px; position:relative; margin-bottom: 50px;\" class=\"wp-block-simple-code-block-ace\"><pre class=\"wp-block-simple-code-block-ace\" style=\"position:absolute;top:0;right:0;bottom:0;left:0\" data-mode=\"javascript\" data-theme=\"monokai\" data-fontsize=\"14\" data-lines=\"Infinity\" data-showlines=\"true\" data-copy=\"false\">let dictionary = Object.fromEntries(data.map(x => [x.id, x.country]));\nconsole.log(dictionary[\"NL\"])<\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"<p>A collections of unique values It is also possible to use an object as dictionary, with a small helper function<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[5,4,1],"tags":[],"class_list":["post-3298","post","type-post","status-publish","format-standard","hentry","category-javascript","category-programming","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/3298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/comments?post=3298"}],"version-history":[{"count":4,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/3298\/revisions"}],"predecessor-version":[{"id":7731,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/3298\/revisions\/7731"}],"wp:attachment":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/media?parent=3298"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/categories?post=3298"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/tags?post=3298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}