[1]非常によく知られている防御プログラミングのシナリオは、入力パラメーターがIEnumerable
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SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
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Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
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new[] { "foo", "bar", "baz" };
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First()
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OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
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new[] { "foo", "bar", "baz" };
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ElementAt(int)
ElementAtOrDefault(int
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First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
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IQueryable LSP, LINQ to Objects, , LINQ LSP.
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new[] { "foo", "bar", "baz" };
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public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
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(ToList()
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AsEnumerable()
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(...)
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ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
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IQueryable LSP, LINQ to Objects, , LINQ LSP.
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new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
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AsEnumerable()
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(...)
Distinct(IEqualityComparer) (...)
ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
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IQueryable LSP, LINQ to Objects, , LINQ LSP.
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new[] { "foo", "bar", "baz" };
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public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
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AsEnumerable()
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(...)
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ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
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new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
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ElementAt(int)
ElementAtOrDefault(int
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First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
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IQueryable LSP, LINQ to Objects, , LINQ LSP.
LSP: . «» , , , . , IEnumerable:
new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
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(ToList()
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Any()
AsEnumerable()
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DefaultIfEmpty()
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(...)
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ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
Zip(IEnumerable, Func<TFirst, TSecond, TResult>)
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.
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IQueryable LSP, LINQ to Objects, , LINQ LSP.
LSP: . «» , , , . , IEnumerable:
new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
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(ToList()
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Any()
AsEnumerable()
Concat(IEnumerable)
DefaultIfEmpty()
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(...)
Distinct(IEqualityComparer) (...)
ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
Zip(IEnumerable, Func<TFirst, TSecond, TResult>)
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.
, , IEnumerable . LSP- LINQ-, ( - ). .NET 4.5,IReadOnlyCollection
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LINQ LSP
IQueryable LSP, LINQ to Objects, , LINQ LSP.
LSP: . «» , , , . , IEnumerable:
new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
,ToArray()
(ToList()
) , ( ) . , , LSP- LINQ- :
Any()
AsEnumerable()
Concat(IEnumerable)
DefaultIfEmpty()
DefaultIfEmpty(T)
Distinct
(...)
Distinct(IEqualityComparer) (...)
ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
Zip(IEnumerable, Func<TFirst, TSecond, TResult>)
LINQ-, . , IEnumerable , .., LSP .
, , , , IReadOnlyCollection, : , , .NET 4.5. , .
.
, , IEnumerable . LSP- LINQ-, ( - ). .NET 4.5,IReadOnlyCollection
, IEnumerable. , .NET 4.5, ( -, , ).
IEnumerable
public class Publisher { public Publisher(IEnumerable<Subscriber> subscribers) { // defensive copy -> good or bad? this.subscribers = subscribers.ToArray(); } // … }
« :IEnumerable, , . , ICollection
, ( ..: , . , , .ICollection
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« , , -, - ,IEnumerable
. , , – .
« , , – ( ), .
.
.
IEnumerable .NET. , , , (LSP – Liskov Substitution Principle). ToArray()
, , , , . , ToArray() , .
,ToArray()
– , ,IEnumerable. , « » , , , , ToArray()
(ToList()
) . , 4- IoC : . : , :
public class Publisher { public Publisher(Subscriber[] subscribers) { this.subscribers = subscribers; } // … }
,IEnumerable, .
, , . , , Publisher . , .
, Publisher , , , , , - .
ICollection
, , , 7IEnumerable - , .
LINQ LSP
IQueryable LSP, LINQ to Objects, , LINQ LSP.
LSP: . «» , , , . , IEnumerable:
new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
,ToArray()
(ToList()
) , ( ) . , , LSP- LINQ- :
Any()
AsEnumerable()
Concat(IEnumerable)
DefaultIfEmpty()
DefaultIfEmpty(T)
Distinct
(...)
Distinct(IEqualityComparer) (...)
ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
Zip(IEnumerable, Func<TFirst, TSecond, TResult>)
LINQ-, . , IEnumerable , .., LSP .
, , , , IReadOnlyCollection, : , , .NET 4.5. , .
.
, , IEnumerable . LSP- LINQ-, ( - ). .NET 4.5,IReadOnlyCollection
, IEnumerable. , .NET 4.5, ( -, , ).
IEnumerable
public class Publisher { public Publisher(IEnumerable<Subscriber> subscribers) { // defensive copy -> good or bad? this.subscribers = subscribers.ToArray(); } // … }
« :IEnumerable, , . , ICollection
, ( ..: , . , , .ICollection
, , ? - . ) . , , 'publisher' (, ). , , , . , , .
« , , -, - ,IEnumerable
. , , – .
« , , – ( ), .
.
.
IEnumerable .NET. , , , (LSP – Liskov Substitution Principle). ToArray()
, , , , . , ToArray() , .
,ToArray()
– , ,IEnumerable. , « » , , , , ToArray()
(ToList()
) . , 4- IoC : . : , :
public class Publisher { public Publisher(Subscriber[] subscribers) { this.subscribers = subscribers; } // … }
,IEnumerable, .
, , . , , Publisher . , .
, Publisher , , , , , - .
ICollection
, , , 7IEnumerable - , .
LINQ LSP
IQueryable LSP, LINQ to Objects, , LINQ LSP.
LSP: . «» , , , . , IEnumerable:
new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
,ToArray()
(ToList()
) , ( ) . , , LSP- LINQ- :
Any()AsEnumerable()
Concat(IEnumerable)
DefaultIfEmpty()
DefaultIfEmpty(T)
Distinct
(...)
Distinct(IEqualityComparer) (...)
ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
Zip(IEnumerable, Func<TFirst, TSecond, TResult>)
LINQ-, . , IEnumerable , .., LSP .
, , , , IReadOnlyCollection, : , , .NET 4.5. , .
.
, , IEnumerable . LSP- LINQ-, ( - ). .NET 4.5,IReadOnlyCollection
, IEnumerable. , .NET 4.5, ( -, , ).
IEnumerable
public class Publisher { public Publisher(IEnumerable<Subscriber> subscribers) { // defensive copy -> good or bad? this.subscribers = subscribers.ToArray(); } // … }
« :IEnumerable, , . , ICollection
, ( ..: , . , , .ICollection
, , ? - . ) . , , 'publisher' (, ). , , , . , , .
« , , -, - ,IEnumerable
. , , – .
« , , – ( ), .
.
.
IEnumerable .NET. , , , (LSP – Liskov Substitution Principle). ToArray()
, , , , . , ToArray() , .
,ToArray()
– , ,IEnumerable. , « » , , , , ToArray()
(ToList()
) . , 4- IoC : . : , :
public class Publisher { public Publisher(Subscriber[] subscribers) { this.subscribers = subscribers; } // … }
,IEnumerable, .
, , . , , Publisher . , .
, Publisher , , , , , - .
ICollection
, , , 7IEnumerable - , .
LINQ LSP
IQueryable LSP, LINQ to Objects, , LINQ LSP.
LSP: . «» , , , . , IEnumerable:
new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
,ToArray()
(ToList()
) , ( ) . , , LSP- LINQ- :
Any()
AsEnumerable()Concat(IEnumerable)
DefaultIfEmpty()
DefaultIfEmpty(T)
Distinct
(...)
Distinct(IEqualityComparer) (...)
ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
Zip(IEnumerable, Func<TFirst, TSecond, TResult>)
LINQ-, . , IEnumerable , .., LSP .
, , , , IReadOnlyCollection, : , , .NET 4.5. , .
.
, , IEnumerable . LSP- LINQ-, ( - ). .NET 4.5,IReadOnlyCollection
, IEnumerable. , .NET 4.5, ( -, , ).
IEnumerable
public class Publisher { public Publisher(IEnumerable<Subscriber> subscribers) { // defensive copy -> good or bad? this.subscribers = subscribers.ToArray(); } // … }
« :IEnumerable, , . , ICollection
, ( ..: , . , , .ICollection
, , ? - . ) . , , 'publisher' (, ). , , , . , , .
« , , -, - ,IEnumerable
. , , – .
« , , – ( ), .
.
.
IEnumerable .NET. , , , (LSP – Liskov Substitution Principle). ToArray()
, , , , . , ToArray() , .
,ToArray()
– , ,IEnumerable. , « » , , , , ToArray()
(ToList()
) . , 4- IoC : . : , :
public class Publisher { public Publisher(Subscriber[] subscribers) { this.subscribers = subscribers; } // … }
,IEnumerable, .
, , . , , Publisher . , .
, Publisher , , , , , - .
ICollection
, , , 7IEnumerable - , .
LINQ LSP
IQueryable LSP, LINQ to Objects, , LINQ LSP.
LSP: . «» , , , . , IEnumerable:
new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
,ToArray()
(ToList()
) , ( ) . , , LSP- LINQ- :
Any()
AsEnumerable()
Concat(IEnumerable)
DefaultIfEmpty()
DefaultIfEmpty(T)
Distinct
(...)
Distinct(IEqualityComparer) (...)
ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
Zip(IEnumerable, Func<TFirst, TSecond, TResult>)
LINQ-, . , IEnumerable , .., LSP .
, , , , IReadOnlyCollection, : , , .NET 4.5. , .
.
, , IEnumerable . LSP- LINQ-, ( - ). .NET 4.5,IReadOnlyCollection
, IEnumerable. , .NET 4.5, ( -, , ).
IEnumerable
public class Publisher { public Publisher(IEnumerable<Subscriber> subscribers) { // defensive copy -> good or bad? this.subscribers = subscribers.ToArray(); } // … }
« :IEnumerable, , . , ICollection
, ( ..: , . , , .ICollection
, , ? - . ) . , , 'publisher' (, ). , , , . , , .
« , , -, - ,IEnumerable
. , , – .
« , , – ( ), .
.
.
IEnumerable .NET. , , , (LSP – Liskov Substitution Principle). ToArray()
, , , , . , ToArray() , .
,ToArray()
– , ,IEnumerable. , « » , , , , ToArray()
(ToList()
) . , 4- IoC : . : , :
public class Publisher { public Publisher(Subscriber[] subscribers) { this.subscribers = subscribers; } // … }
,IEnumerable, .
, , . , , Publisher . , .
, Publisher , , , , , - .
ICollection
, , , 7IEnumerable - , .
LINQ LSP
IQueryable LSP, LINQ to Objects, , LINQ LSP.
LSP: . «» , , , . , IEnumerable:
new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
,ToArray()
(ToList()
) , ( ) . , , LSP- LINQ- :
Any()
AsEnumerable()
Concat(IEnumerable)
DefaultIfEmpty()
DefaultIfEmpty(T)
Distinct
(...)
Distinct(IEqualityComparer) (...)
ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
Zip(IEnumerable, Func<TFirst, TSecond, TResult>)
LINQ-, . , IEnumerable , .., LSP .
, , , , IReadOnlyCollection, : , , .NET 4.5. , .
.
, , IEnumerable . LSP- LINQ-, ( - ). .NET 4.5,IReadOnlyCollection
, IEnumerable. , .NET 4.5, ( -, , ).
IEnumerable
public class Publisher { public Publisher(IEnumerable<Subscriber> subscribers) { // defensive copy -> good or bad? this.subscribers = subscribers.ToArray(); } // … }
« :IEnumerable, , . , ICollection
, ( ..: , . , , .ICollection
, , ? - . ) . , , 'publisher' (, ). , , , . , , .
« , , -, - ,IEnumerable
. , , – .
« , , – ( ), .
.
.
IEnumerable .NET. , , , (LSP – Liskov Substitution Principle). ToArray()
, , , , . , ToArray() , .
,ToArray()
– , ,IEnumerable. , « » , , , , ToArray()
(ToList()
) . , 4- IoC : . : , :
public class Publisher { public Publisher(Subscriber[] subscribers) { this.subscribers = subscribers; } // … }
,IEnumerable, .
, , . , , Publisher . , .
, Publisher , , , , , - .
ICollection
, , , 7IEnumerable - , .
LINQ LSP
IQueryable LSP, LINQ to Objects, , LINQ LSP.
LSP: . «» , , , . , IEnumerable:
new[] { "foo", "bar", "baz" };
:
public class InfiniteStrings : IEnumerable<string> { public IEnumerator<string> GetEnumerator() { while (true) yield return "foo"; } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } }
,ToArray()
(ToList()
) , ( ) . , , LSP- LINQ- :
Any()
AsEnumerable()
Concat(IEnumerable)
DefaultIfEmpty()
DefaultIfEmpty(T)
Distinct
(...)
Distinct(IEqualityComparer) (...)
ElementAt(int)
ElementAtOrDefault(int
)
First()
FirstOrDefault()
OfType()
Select(Func<TSource, TResult>)
Select(Func<TSource, int, TResult>)
SelectMany(Func<TSource, IEnumerable>)
SelectMany(Func<TSource, int, IEnumerable>)
SelectMany(Func<TSource, IEnumerable>, Func<TSource, TCollection, TResult>)
SelectMany(Func<TSource, int, IEnumerable>, Func<TSource, TCollection, TResult>)
Single()
SingleOrDefault()
Skip(int)
Take(int)
Where(Func<TSource, bool>)
Where(Func<TSource, int, bool>)
Zip(IEnumerable, Func<TFirst, TSecond, TResult>)
LINQ-, . , IEnumerable , .., LSP .
, , , , IReadOnlyCollection, : , , .NET 4.5. , .
.
, , IEnumerable . LSP- LINQ-, ( - ). .NET 4.5,IReadOnlyCollection
, IEnumerable. , .NET 4.5, ( -, , ).
LINQ vs LSP
防衛的プログラミングに関する以前の投稿に応えて、読者の一人がこの質問を送ってきました。
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