/// <summary>
/// Converts a nullable type into an F# option container.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="value">Input nullable value.</param>
/// <returns>An F# option representation of the nullable value.</returns>
public static FSharpOption <T> FromNullable <T>(T?value) where T : struct
{
if (value == null)
{
return(FSharpOption <T> .None);
}
return(FSharpOption <T> .Some(value.Value));
}
public static void Remove(Stream source, int id, Stream dest)
{
var table = Table.Load(new StreamReader(source), new ReadSettings(Delimiter.Comma, false, true, FSharpOption <int> .None,
FSharpOption <FSharpFunc <Tuple <int, string>, FSharpOption <Type> > > .Some(FSharpFunc <Tuple <int, string>, FSharpOption <Type> > .FromConverter(tuple => FSharpOption <Type> .Some(typeof(string))))));
var finalTable = Remove(table, id);
Table.Save(finalTable, new StreamWriter(dest, new UTF8Encoding(true)));
}
/// <summary>
/// Converts a value that could potentially be null to an F# option container.
/// The return value could either be 'None' or 'Some' which contains a non-null value.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="value">Input value that is nullable.</param>
/// <returns>An F# option representation of the nullable value.</returns>
public static FSharpOption <T> FromNullable <T>(T value)
{
if (value == null)
{
return(FSharpOption <T> .None);
}
return(FSharpOption <T> .Some(value));
}
public FSharpOption <T> Deserialize(ref JsonReader <TSymbol> reader)
{
if (reader.ReadIsNull())
{
return(null);
}
return(FSharpOption <T> .Some(elementFormatter.Deserialize(ref reader)));
}
public void CanSerializeOption()
{
var expected = FSharpOption <string> .Some("hello");
Serialize(expected);
Reset();
var actual = Deserialize <object>();
expected.ShouldDeepEqual(actual);
}
public void CanSerializeOptionalDU()
{
var expected = DU2.NewE(FSharpOption <DU1> .Some(DU1.NewA(1)));
Serialize(expected);
Reset();
var actual = Deserialize <object>();
expected.ShouldDeepEqual(actual);
}
public override void Setup(BenchmarkContext context)
{
base.Setup(context);
var record = new User(
name: "John Doe",
aref: FSharpOption <string> .Some("ok"),
connections: "test");
InitStreamWith(record);
}
public static FSharpOption <T> TryGetTypedProperty <T>(this PropertyCollection col)
{
T value;
if (col.TryGetProperty(typeof(T), out value))
{
return(FSharpOption <T> .Some(value));
}
return(FSharpOption <T> .None);
}
