MLEM/Docs/api/MLEM.Misc.CollectionExtensions.yml

### YamlMime:ManagedReference
items:
- uid: MLEM.Misc.CollectionExtensions
  commentId: T:MLEM.Misc.CollectionExtensions
  id: CollectionExtensions
  parent: MLEM.Misc
  children:
  - MLEM.Misc.CollectionExtensions.Append``1(System.Collections.Generic.IEnumerable{``0},``0)
  - MLEM.Misc.CollectionExtensions.Combinations``1(System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{``0}})
  - MLEM.Misc.CollectionExtensions.IndexCombinations``1(System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{``0}})
  - MLEM.Misc.CollectionExtensions.Prepend``1(System.Collections.Generic.IEnumerable{``0},``0)
  langs:
  - csharp
  - vb
  name: CollectionExtensions
  nameWithType: CollectionExtensions
  fullName: MLEM.Misc.CollectionExtensions
  type: Class
  source:
    remote:
      path: MLEM/Misc/CollectionExtensions.cs
      branch: main
      repo: https://github.com/Ellpeck/MLEM
    id: CollectionExtensions
    path: ../MLEM/Misc/CollectionExtensions.cs
    startLine: 7
  assemblies:
  - MLEM
  namespace: MLEM.Misc
  summary: A set of extensions for dealing with collections of various kinds
  example: []
  syntax:
    content: public static class CollectionExtensions
    content.vb: Public Module CollectionExtensions
  inheritance:
  - System.Object
  inheritedMembers:
  - System.Object.ToString
  - System.Object.Equals(System.Object)
  - System.Object.Equals(System.Object,System.Object)
  - System.Object.ReferenceEquals(System.Object,System.Object)
  - System.Object.GetHashCode
  - System.Object.GetType
  - System.Object.MemberwiseClone
- uid: MLEM.Misc.CollectionExtensions.Combinations``1(System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{``0}})
  commentId: M:MLEM.Misc.CollectionExtensions.Combinations``1(System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{``0}})
  id: Combinations``1(System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{``0}})
  isExtensionMethod: true
  parent: MLEM.Misc.CollectionExtensions
  langs:
  - csharp
  - vb
  name: Combinations<T>(IEnumerable<IEnumerable<T>>)
  nameWithType: CollectionExtensions.Combinations<T>(IEnumerable<IEnumerable<T>>)
  fullName: MLEM.Misc.CollectionExtensions.Combinations<T>(System.Collections.Generic.IEnumerable<System.Collections.Generic.IEnumerable<T>>)
  type: Method
  source:
    remote:
      path: MLEM/Misc/CollectionExtensions.cs
      branch: main
      repo: https://github.com/Ellpeck/MLEM
    id: Combinations
    path: ../MLEM/Misc/CollectionExtensions.cs
    startLine: 24
  assemblies:
  - MLEM
  namespace: MLEM.Misc
  summary: >-
    This method returns a set of possible combinations of n items from n different sets, where the order of the items in each combination is based on the order of the input sets.

    For a version of this method that returns indices rather than entries, see <xref href="MLEM.Misc.CollectionExtensions.IndexCombinations%60%601(System.Collections.Generic.IEnumerable%7bSystem.Collections.Generic.IEnumerable%7b%60%600%7d%7d)" data-throw-if-not-resolved="false"></xref>.

    <example>

    Given the input set <code>{{1, 2, 3}, {A, B}, {+, -}}</code>, the returned set would contain the following sets:

    <pre><code class="lang-csharp">{1, A, +}, {1, A, -}, {1, B, +}, {1, B, -},

    {2, A, +}, {2, A, -}, {2, B, +}, {2, B, -},

    {3, A, +}, {3, A, -}, {3, B, +}, {3, B, -}</code></pre>

    </example>
  example: []
  syntax:
    content: public static IEnumerable<IEnumerable<T>> Combinations<T>(this IEnumerable<IEnumerable<T>> things)
    parameters:
    - id: things
      type: System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{{T}}}
      description: The different sets to be combined
    typeParameters:
    - id: T
      description: The type of the items in the sets
    return:
      type: System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{{T}}}
      description: All combinations of set items as described
    content.vb: Public Shared Function Combinations(Of T)(things As IEnumerable(Of IEnumerable(Of T))) As IEnumerable(Of IEnumerable(Of T))
  overload: MLEM.Misc.CollectionExtensions.Combinations*
  nameWithType.vb: CollectionExtensions.Combinations(Of T)(IEnumerable(Of IEnumerable(Of T)))
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  name.vb: Combinations(Of T)(IEnumerable(Of IEnumerable(Of T)))
- uid: MLEM.Misc.CollectionExtensions.IndexCombinations``1(System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{``0}})
  commentId: M:MLEM.Misc.CollectionExtensions.IndexCombinations``1(System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{``0}})
  id: IndexCombinations``1(System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{``0}})
  isExtensionMethod: true
  parent: MLEM.Misc.CollectionExtensions
  langs:
  - csharp
  - vb
  name: IndexCombinations<T>(IEnumerable<IEnumerable<T>>)
  nameWithType: CollectionExtensions.IndexCombinations<T>(IEnumerable<IEnumerable<T>>)
  fullName: MLEM.Misc.CollectionExtensions.IndexCombinations<T>(System.Collections.Generic.IEnumerable<System.Collections.Generic.IEnumerable<T>>)
  type: Method
  source:
    remote:
      path: MLEM/Misc/CollectionExtensions.cs
      branch: main
      repo: https://github.com/Ellpeck/MLEM
    id: IndexCombinations
    path: ../MLEM/Misc/CollectionExtensions.cs
    startLine: 46
  assemblies:
  - MLEM
  namespace: MLEM.Misc
  summary: >-
    This method returns a set of possible combinations of n indices of items from n different sets, where the order of the items' indices in each combination is based on the order of the input sets.

    For a version of this method that returns entries rather than indices, see <xref href="MLEM.Misc.CollectionExtensions.Combinations%60%601(System.Collections.Generic.IEnumerable%7bSystem.Collections.Generic.IEnumerable%7b%60%600%7d%7d)" data-throw-if-not-resolved="false"></xref>.

    <example>

    Given the input set <code>{{1, 2, 3}, {A, B}, {+, -}}</code>, the returned set would contain the following sets:

    <pre><code class="lang-csharp">{0, 0, 0}, {0, 0, 1}, {0, 1, 0}, {0, 1, 1},

    {1, 0, 0}, {1, 0, 1}, {1, 1, 0}, {1, 1, 1},

    {2, 0, 0}, {2, 0, 1}, {2, 1, 0}, {2, 1, 1}</code></pre>

    </example>
  example: []
  syntax:
    content: public static IEnumerable<IEnumerable<int>> IndexCombinations<T>(this IEnumerable<IEnumerable<T>> things)
    parameters:
    - id: things
      type: System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{{T}}}
      description: The different sets to be combined
    typeParameters:
    - id: T
      description: The type of the items in the sets
    return:
      type: System.Collections.Generic.IEnumerable{System.Collections.Generic.IEnumerable{System.Int32}}
      description: All combinations of set items as described
    content.vb: Public Shared Function IndexCombinations(Of T)(things As IEnumerable(Of IEnumerable(Of T))) As IEnumerable(Of IEnumerable(Of Integer))
  overload: MLEM.Misc.CollectionExtensions.IndexCombinations*
  nameWithType.vb: CollectionExtensions.IndexCombinations(Of T)(IEnumerable(Of IEnumerable(Of T)))
  fullName.vb: MLEM.Misc.CollectionExtensions.IndexCombinations(Of T)(System.Collections.Generic.IEnumerable(Of System.Collections.Generic.IEnumerable(Of T)))
  name.vb: IndexCombinations(Of T)(IEnumerable(Of IEnumerable(Of T)))
- uid: MLEM.Misc.CollectionExtensions.Append``1(System.Collections.Generic.IEnumerable{``0},``0)
  commentId: M:MLEM.Misc.CollectionExtensions.Append``1(System.Collections.Generic.IEnumerable{``0},``0)
  id: Append``1(System.Collections.Generic.IEnumerable{``0},``0)
  isExtensionMethod: true
  parent: MLEM.Misc.CollectionExtensions
  langs:
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  - vb
  name: Append<T>(IEnumerable<T>, T)
  nameWithType: CollectionExtensions.Append<T>(IEnumerable<T>, T)
  fullName: MLEM.Misc.CollectionExtensions.Append<T>(System.Collections.Generic.IEnumerable<T>, T)
  type: Method
  source:
    remote:
      path: MLEM/Misc/CollectionExtensions.cs
      branch: main
      repo: https://github.com/Ellpeck/MLEM
    id: Append
    path: ../MLEM/Misc/CollectionExtensions.cs
    startLine: 59
  assemblies:
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  namespace: MLEM.Misc
  summary: Appends a value to the end of the sequence.
  example: []
  syntax:
    content: public static IEnumerable<T> Append<T>(this IEnumerable<T> source, T element)
    parameters:
    - id: source
      type: System.Collections.Generic.IEnumerable{{T}}
      description: A sequence of values.
    - id: element
      type: '{T}'
      description: The value to append to <code class="paramref">source</code>.
    typeParameters:
    - id: T
      description: The type of the elements of <code class="paramref">source</code>.
    return:
      type: System.Collections.Generic.IEnumerable{{T}}
      description: A new sequence that ends with <code class="paramref">element</code>.
    content.vb: Public Shared Function Append(Of T)(source As IEnumerable(Of T), element As T) As IEnumerable(Of T)
  overload: MLEM.Misc.CollectionExtensions.Append*
  nameWithType.vb: CollectionExtensions.Append(Of T)(IEnumerable(Of T), T)
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  name.vb: Append(Of T)(IEnumerable(Of T), T)
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  commentId: M:MLEM.Misc.CollectionExtensions.Prepend``1(System.Collections.Generic.IEnumerable{``0},``0)
  id: Prepend``1(System.Collections.Generic.IEnumerable{``0},``0)
  isExtensionMethod: true
  parent: MLEM.Misc.CollectionExtensions
  langs:
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  name: Prepend<T>(IEnumerable<T>, T)
  nameWithType: CollectionExtensions.Prepend<T>(IEnumerable<T>, T)
  fullName: MLEM.Misc.CollectionExtensions.Prepend<T>(System.Collections.Generic.IEnumerable<T>, T)
  type: Method
  source:
    remote:
      path: MLEM/Misc/CollectionExtensions.cs
      branch: main
      repo: https://github.com/Ellpeck/MLEM
    id: Prepend
    path: ../MLEM/Misc/CollectionExtensions.cs
    startLine: 70
  assemblies:
  - MLEM
  namespace: MLEM.Misc
  summary: Prepends a value to the beginning of the sequence.
  example: []
  syntax:
    content: public static IEnumerable<T> Prepend<T>(this IEnumerable<T> source, T element)
    parameters:
    - id: source
      type: System.Collections.Generic.IEnumerable{{T}}
      description: A sequence of values.
    - id: element
      type: '{T}'
      description: The value to prepend to <code class="paramref">source</code>.
    typeParameters:
    - id: T
      description: The type of the elements of <code class="paramref">source</code>.
    return:
      type: System.Collections.Generic.IEnumerable{{T}}
      description: A new sequence that begins with <code class="paramref">element</code>.
    content.vb: Public Shared Function Prepend(Of T)(source As IEnumerable(Of T), element As T) As IEnumerable(Of T)
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