51 lines
1.1 KiB
D
51 lines
1.1 KiB
D
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module day4.part1 copy.main;
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import std;
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void main()
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{
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readText("input").parsePassports.countValidPassports.writeln;
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}
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alias Passport = string[string];
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auto parsePassports(string input)
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{
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return input.splitter("\n\n").map!(passport => passport.splitter().map!((entry) {
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auto keyAndValue = entry.split(':');
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return tuple(keyAndValue[0], keyAndValue[1]);
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}).assocArray);
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}
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enum requiredFields = ["byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid"];
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bool isValidPassport(Passport passport)
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{
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return requiredFields.all!(field => field in passport);
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}
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auto countValidPassports(R)(R r) if (isInputRange!R && is(ElementType!R == Passport))
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{
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return r.filter!isValidPassport.count;
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}
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unittest
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{
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auto input = `ecl:gry pid:860033327 eyr:2020 hcl:#fffffd
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byr:1937 iyr:2017 cid:147 hgt:183cm
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iyr:2013 ecl:amb cid:350 eyr:2023 pid:028048884
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hcl:#cfa07d byr:1929
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hcl:#ae17e1 iyr:2013
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eyr:2024
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ecl:brn pid:760753108 byr:1931
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hgt:179cm
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hcl:#cfa07d eyr:2025 pid:166559648
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iyr:2011 ecl:brn hgt:59in`;
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auto passPorts = input.parsePassports;
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assert(passPorts.countValidPassports == 2);
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}
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