2b:null 2c:["$","title",null,{"children":"NIC to Birthday and Gender | Nuwan I. Senaratna | Observable"}] 31:[] 2f:{"id":"3811b441c547cd03","slug":"nic-to-birthday-and-gender","title":"NIC to Birthday and Gender","thumbnail":"1cd9ff3bf0218b78c30e2a4e47bd7bac976a8e19ee3bf73fd2b3c7b8b8c0aa3b","access_level":"public","create_time":"$D2021-05-25T05:48:49.716Z","update_time":"$D2021-05-25T11:47:18.518Z","view_time":null,"first_public_time":"$D2021-05-25T06:15:40.930Z","fork":false,"stars":0,"starred":false,"owner":{"type":"team","id":"b926ae7603b79979","login":"nuuuwan","name":"Nuwan I. Senaratna","avatar_url":"https://avatars-next.observableusercontent.com/4745b7afbe2cfc53c6ed90b49f8a91c82e7f3c23b660f81b825b5a03b86501fe","tier":"starter_2024"},"version":144,"publish_version":144,"role":null,"authored":false,"authors":[{"type":"individual","id":"655a2a85c10e2c7d","login":"nuuuwan","name":"Nuwan I. Senaratna","avatar_url":"https://avatars-next.observableusercontent.com/4745b7afbe2cfc53c6ed90b49f8a91c82e7f3c23b660f81b825b5a03b86501fe","tier":null}],"members":[{"type":"individual","id":"655a2a85c10e2c7d","login":"nuuuwan","name":"Nuwan I. Senaratna","avatar_url":"https://avatars-next.observableusercontent.com/4745b7afbe2cfc53c6ed90b49f8a91c82e7f3c23b660f81b825b5a03b86501fe","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"subscribed":null,"forks":2,"collection":null,"type":"notebook","body":{"title":"NIC to Birthday and Gender","cells":[{"id":0,"value":"md`# NIC to Birthday and Gender`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":5,"value":"viewof nicNum = Inputs.text({\n label: \"NIC Number\",\n placeholder: \"NIC Number\",\n value: '820010541V'\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":48,"value":"{\n const { gender, dob, isValid } = parseNIC(nicNum);\n\n return html`\n \n \n \n \n \n \n \n \n \n \n \n \n \n

Gender	${gender}
Date of Birth	${dob.toLocaleDateString('si-LK')}
Is a Valid NIC Number?	${isValid}

\n`;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":90,"value":"md`# Code`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":98,"value":"d3 = require('d3')","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":2,"value":"function parseNIC(nicNum) {\n nicNum = nicNum.replaceAll(' ', '');\n let year, date, serial, checksum;\n\n // Old Format\n if (nicNum.length === 10) {\n year = 1900 + parseInt(nicNum.substring(0, 2));\n date = parseInt(nicNum.substring(2, 5));\n serial = parseInt(nicNum.substring(5, 8));\n checksum = parseInt(nicNum.substring(8, 9));\n\n // New Format\n } else if (nicNum.length === 12) {\n year = parseInt(nicNum.substring(0, 4));\n date = parseInt(nicNum.substring(4, 7));\n serial = parseInt(nicNum.substring(7, 10));\n checksum = parseInt(nicNum.substring(10, 11));\n } else {\n throw `Invalid NIC: ${nicNum}`;\n }\n\n const gender = date > 500 ? 'Female' : 'Male';\n const isValid = checksum === getUPCChecksum(nicNum);\n console.debug(checksum, getUPCChecksum(nicNum));\n\n return { gender, dob: new Date(year, 0, (date % 500) - 1), isValid };\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":96,"value":"function getUPCChecksum(nicNum) {\n const nicWithoutCS = nicNum.substring(0, nicNum.length - 1);\n const s = d3.sum(\n d3.range(0, nicWithoutCS.length).map(function(i) {\n if (i % 2 === 1) {\n // Add the digits in the odd-numbered positions from the right\n // (first, third, fifth, etc. - not including the check digit) together and multiply by three.\n return parseInt(nicWithoutCS.charAt(i)) * 3;\n } else {\n // Add the digits (up to but not including the check digit) in the even-numbered positions\n // (second, fourth, sixth, etc.) to the result.\n return parseInt(nicWithoutCS.charAt(i));\n }\n })\n );\n console.debug(s);\n // Take the remainder of the result divided by 10 (ie. the modulo 10 operation).\n const rem = s % 10;\n\n // If the remainder is equal to 0 then use 0 as the check digit,\n if (rem === 0) {\n return 0;\n }\n // and if not 0 subtract the remainder from 10 to derive the check digit.\n return 10 - rem;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":140,"value":"getUPCChecksum('036000241457')","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"}],"files":"$W31","stdlib":"1","titling":"auto"}} 30:"$2f:body"