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How to use BooleanNull class of NBi.Core.Calculation.Predicate.Boolean package

Best NBi code snippet using NBi.Core.Calculation.Predicate.Boolean.BooleanNull

PredicateFactory.cs

Source:PredicateFactory.cs

...78                case ColumnType.Boolean:79                    switch (comparerType)80                    {81                        case ComparerType.Equal: return new BooleanEqual(not, (IScalarResolver)reference);82                        case ComparerType.Null: return new BooleanNull(not);83                        case ComparerType.True: return new BooleanTrue(not);84                        case ComparerType.False: return new BooleanFalse(not);85                        default:86                            throw new ArgumentOutOfRangeException($"Boolean columns only support Equal, Null, True and False comparers and not the '{comparerType.ToString().ToDashedCase()}' comparer.");87                    }88                default:89                    break;90            }91            throw new ArgumentOutOfRangeException();92        }93        public IPredicate Instantiate(PredicateArgs args)94            => Instantiate(args.ComparerType, args.ColumnType, args.Not95                , (args as ReferencePredicateArgs)?.Reference96                , (args as CultureSensitivePredicateArgs)?.Culture...

BooleanNull.cs

Source:BooleanNull.cs

...6using System.Text;7using System.Threading.Tasks;8namespace NBi.Core.Calculation.Predicate.Boolean9{10    class BooleanNull : AbstractPredicate11    {12        public BooleanNull(bool not)13            : base(not)14        { }15        protected override bool Apply(object x)16        {17            return x == null || x == DBNull.Value || (x as string)=="(null)";18        }19        public override string ToString() => $"is null";20    }21}...

BooleanNull

Using AI Code Generation

1BooleanNull booleanNull = new BooleanNull();2booleanNull.IsTrue = true;3booleanNull.IsTrue = false;4booleanNull.IsTrue = null;5BooleanNull booleanNull = new BooleanNull();6booleanNull.IsTrue = true;7booleanNull.IsTrue = false;8booleanNull.IsTrue = null;9BooleanNull booleanNull = new BooleanNull();10booleanNull.IsTrue = true;11booleanNull.IsTrue = false;12booleanNull.IsTrue = null;13BooleanNull booleanNull = new BooleanNull();14booleanNull.IsTrue = true;15booleanNull.IsTrue = false;16booleanNull.IsTrue = null;17BooleanNull booleanNull = new BooleanNull();18booleanNull.IsTrue = true;19booleanNull.IsTrue = false;20booleanNull.IsTrue = null;21BooleanNull booleanNull = new BooleanNull();22booleanNull.IsTrue = true;23booleanNull.IsTrue = false;24booleanNull.IsTrue = null;25BooleanNull booleanNull = new BooleanNull();26booleanNull.IsTrue = true;27booleanNull.IsTrue = false;28booleanNull.IsTrue = null;29BooleanNull booleanNull = new BooleanNull();30booleanNull.IsTrue = true;31booleanNull.IsTrue = false;32booleanNull.IsTrue = null;33BooleanNull booleanNull = new BooleanNull();34booleanNull.IsTrue = true;35booleanNull.IsTrue = false;36booleanNull.IsTrue = null;37BooleanNull booleanNull = new BooleanNull();38booleanNull.IsTrue = true;39booleanNull.IsTrue = false;40booleanNull.IsTrue = null;

BooleanNull

Using AI Code Generation

1var isNull = new BooleanNull();2var result = isNull.Execute(null);3Console.WriteLine(result);4var isNull = new BooleanNull();5var result = isNull.Execute(<variable name>);6Console.WriteLine(result);7var isNull = new BooleanNull();8var result = isNull.Execute(<variable name>);9Console.WriteLine(result);

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