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| Ligne 37 : | Ligne 37 : | ||
// 2 - 10 | // 2 - 10 | ||
// 2 - 11 | // 2 - 11 | ||
</kode> | |||
== DistinctBy == | |||
Returns all distinct elements of the given source, where "distinctness" is determined via a projection and the default equality comparer for the projected type. | |||
<kode lang='cs'> | |||
var items = new[] | |||
{ | |||
new Item { Id = 1, Name = "One" }, | |||
new Item { Id = 2, Name = "Two" }, | |||
new Item { Id = 3, Name = "One" }, | |||
new Item { Id = 2, Name = "Two again" } | |||
}; | |||
items.DistinctBy(x => x.Id); // 1 2 3 | |||
items.DistinctBy(x => x.Name); // 1 2 2 | |||
</kode> | </kode> | ||
Version du 14 novembre 2020 à 22:49
Links
Add
|
dotnet add package MoreLINQ |
Operators
Aggregate
Batch
Batches the source sequence into sized buckets.
|
Enumerable
.Range(1, 10)
.Batch(3); // split the sequence into sequences of max length 3
// [1, 2, 3]
// [4, 5, 6]
// [7, 8, 9]
// [10]
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Cartesian
Returns the Cartesian product of two or more sequences by combining each element from the sequences and applying a user-defined projection to the set.
|
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Enumerable
.Range(1, 2)
.Cartesian(
Enumerable.Range(10, 2),
(x, y) => $"{x} - {y}");
// 1 - 10
// 1 - 11
// 2 - 10
// 2 - 11
|
DistinctBy
Returns all distinct elements of the given source, where "distinctness" is determined via a projection and the default equality comparer for the projected type.
|
|
var items = new[]
{
new Item { Id = 1, Name = "One" },
new Item { Id = 2, Name = "Two" },
new Item { Id = 3, Name = "One" },
new Item { Id = 2, Name = "Two again" }
};
items.DistinctBy(x => x.Id); // 1 2 3
items.DistinctBy(x => x.Name); // 1 2 2
|
