{"id":3304,"date":"2020-01-29T10:50:34","date_gmt":"2020-01-29T09:50:34","guid":{"rendered":"https:\/\/solidt.eu\/site\/?p=3304"},"modified":"2022-07-25T08:35:42","modified_gmt":"2022-07-25T07:35:42","slug":"javascript-simple-binary","status":"publish","type":"post","link":"https:\/\/solidt.eu\/site\/javascript-simple-binary\/","title":{"rendered":"Javascript simple binary"},"content":{"rendered":"\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">const binary = (dec) => (dec >>> 0).toString(2).padStart(8, '0');\nconst output = (...a) => Array.from(...a).forEach(x => console.log(binary(x), x));\noutput([\n\t20,\n\t19,\n\t20 ^ 19\n]);<\/pre>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">00010100 20\n00010011 19\n00000111 7<\/pre>\n\n\n\n<p><a href=\"https:\/\/stackoverflow.com\/a\/1436448\ufffc\">https:\/\/stackoverflow.com\/a\/1436448<a href=\"https:\/\/stackoverflow.com\/posts\/1436448\/timeline\"><\/a><\/a><\/p>\n\n\n\n<p>To get a bit mask:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">var mask = 1 &lt;&lt; 5; \/\/ gets the 6th bit<\/pre>\n\n\n\n<p>To test if a bit is set:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">if ((n &amp; mask) != 0) {\n  \/\/ bit is set\n} else {\n  \/\/ bit is not set\n}<\/pre>\n\n\n\n<p>To set a bit:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">n |= mask;<\/pre>\n\n\n\n<p>To clear a bit:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">n &amp;= ~mask;<\/pre>\n\n\n\n<p>To toggle a bit:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">n ^= mask;<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/stackoverflow.com\/a\/1436448 To get a bit mask: To test if a bit is set: To set a bit: To clear a bit: To toggle a bit:<\/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-3304","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\/3304","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=3304"}],"version-history":[{"count":3,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/3304\/revisions"}],"predecessor-version":[{"id":3307,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/3304\/revisions\/3307"}],"wp:attachment":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/media?parent=3304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/categories?post=3304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/tags?post=3304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}