public IMaybe <MetadataDefinitionGroupResource> FindByName(string name)
{
var result = _metaDataDefinitionGroupProjectionRepository.ToQueryable()
.FirstOrDefault(a => a.Name == name);
return(result == null?MaybeExtensions.ToMaybe <MetadataDefinitionGroupResource>(null) : result.ToMetadataDefinitionGroupResource().ToMaybe());
}
public void Noones_Are_Expected_To_Be_Equal()
{
var first = MaybeExtensions.None <string>();
var second = MaybeExtensions.None <string>();
Assert.Equal(first, second);
Assert.Equal(first, Maybe <string> .None);
Assert.Equal(second, Maybe <string> .None);
}
public void Test_FirstOrNone()
{
Assert.That(() => MaybeExtensions.FirstOrNone <int>(null, null), Throws.ArgumentNullException);
Assert.That(() => Array.Empty <int>().FirstOrNone(null), Throws.ArgumentNullException);
var coll = new[] { 12, 12351, 123, 11, 0, -88 };
Assert.AreEqual(coll[0], coll.FirstOrNone(x => true).Match(int.MinValue));
Assert.That(() => Array.Empty <int>().FirstOrNone(x => false).Match(new IndexOutOfRangeException()),
Throws.InstanceOf <IndexOutOfRangeException>());
}
public void Test_ElementAtOrNone()
{
Assert.That(() => MaybeExtensions.ElementAtOrNone <int>(null, 0), Throws.ArgumentNullException);
Assert.That(() => Array.Empty <int>().SelectSome(x => x).ElementAtOrNone(-10), Throws.ArgumentException);
var coll = new[] { 12, 12351, 123, 11, 0, -88 };
Assert.AreEqual(coll[3], coll.ElementAtOrNone(3).Match(int.MinValue));
Assert.That(() => coll.ElementAtOrNone(6).Match(new IndexOutOfRangeException()),
Throws.InstanceOf <IndexOutOfRangeException>());
}
private static IEnumerable <Token> PartitionSequences(
IEnumerable <Token> tokens,
Func <string, Maybe <Tuple <DescriptorType, Maybe <int> > > > typeLookup)
{
return(from tseq in tokens.Pairwise(
(f, s) =>
f.IsName() && s.IsValue()
? typeLookup(f.Text).Return(info =>
info.Item1 == DescriptorType.Sequence
? new[] { f }.Concat(tokens.SkipWhile(t => t.Equals(f)).TakeWhile(v => v.IsValue()).Take(MaybeExtensions.Return(info.Item2, items => items, 0)))
: new Token[] { }, new Token[] { })
: new Token[] {})
from t in tseq
select t);
}
