pub fn eqlOpt(a: ?OsVersion, b: ?OsVersion) bool
a: ?OsVersion
b: ?OsVersion
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pub fn eqlOpt(a: ?OsVersion, b: ?OsVersion) bool { if (a == null and b == null) return true; if (a == null or b == null) return false; return OsVersion.eql(a.?, b.?); }