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#Region "Microsoft.VisualBasic::8ea134180a40bffae99e68390d983785, Microsoft.VisualBasic.Core\Extensions\Collection\Enumerable.vb"
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#End Region
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Imports System.Runtime.CompilerServices
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Imports Microsoft.VisualBasic.ComponentModel.Collection
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Imports Microsoft.VisualBasic.ComponentModel.Collection.Generic
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Imports Microsoft.VisualBasic.Language
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Imports Microsoft.VisualBasic.Serialization.JSON
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Imports Microsoft.VisualBasic.Text.Xml.Models
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Imports Microsoft.VisualBasic.Text.Xml.Models.KeyValuePair
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<Extension>
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Public Module IEnumerations
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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<Extension>
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Public Function [Next](Of T)(random As Random, data As T()) As T
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Return data(random.Next(0, data.Length))
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End Function
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<Extension> Public Function Differ(Of T As INamedValue, T2)(source As IEnumerable(Of T),
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ToDiffer As IEnumerable(Of T2),
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getId As Func(Of T2, String)) As String()
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Dim targetIndex As String() = (From item As T In source Select item.Key).ToArray
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Dim LQuery$() = LinqAPI.Exec(Of String) _
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_
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() <= From item As T2
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In ToDiffer
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Let strId As String = getId(item)
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Where Array.IndexOf(targetIndex, strId) = -1
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Select strId
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Return LQuery
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End Function
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<Extension> Public Function Differ(Of T As INamedValue, T2 As INamedValue)(source As IEnumerable(Of T), ToDiffer As IEnumerable(Of T2)) As String()
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Dim targetIndex As String() = (From item In source Select item.Key).ToArray
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Dim LQuery = (From item As T2
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In ToDiffer
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Where Array.IndexOf(targetIndex, item.Key) = -1
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Select item.Key).ToArray
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Return LQuery
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End Function
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<Extension>
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Public Function GetItem(Of T As INamedValue)(Id As String, source As IEnumerable(Of T)) As T
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Return source.Take(Id)
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End Function
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<Extension> Public Function GetItems(Of T As INamedValue)(source As IEnumerable(Of T), Id As String) As T()
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Dim LQuery = (From ItemObj As T In source Where String.Equals(Id, ItemObj.Key) Select ItemObj).ToArray
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Return LQuery
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End Function
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<Extension> Public Function CreateDictionary(Of T As INamedValue)(Collection As IEnumerable(Of T)) As Dictionary(Of String, T)
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Dim Dictionary As New Dictionary(Of String, T)
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For Each obj In Collection
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Call Dictionary.Add(obj.Key, obj)
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Next
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Return Dictionary
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End Function
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<Extension> Public Function FindByItemKey(source As IEnumerable(Of KeyValuePair), Key As String, Optional Explicit As Boolean = True) As KeyValuePair()
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Dim Method = If(Explicit, StringComparison.Ordinal, StringComparison.OrdinalIgnoreCase)
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Dim LQuery = (From item In source Where String.Equals(item.Key, Key, Method) Select item).ToArray
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Return LQuery
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End Function
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<Extension> Public Function FindByItemKey(Of PairItemType As IKeyValuePair)(source As IEnumerable(Of PairItemType), Key As String, Optional Explicit As Boolean = True) As PairItemType()
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Dim Method = If(Explicit, StringComparison.Ordinal, StringComparison.OrdinalIgnoreCase)
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Dim LQuery = (From item In source Where String.Equals(item.Key, Key, Method) Select item).ToArray
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Return LQuery
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End Function
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<Extension> Public Function FindByItemValue(Of PairItemType As IKeyValuePair)(source As IEnumerable(Of PairItemType), Value As String, Optional strict As Boolean = True) As PairItemType()
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Dim Method = If(strict, StringComparison.Ordinal, StringComparison.OrdinalIgnoreCase)
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Dim LQuery = (From item In source Where String.Equals(item.Key, Value, Method) Select item).ToArray
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Return LQuery
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End Function
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<Extension> Public Function Takes(Of T As INamedValue)(source As IEnumerable(Of T), uniqueId As String, Optional strict As Boolean = True) As T()
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If source Is Nothing Then
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Return New T() {}
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End If
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If strict Then
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Dim table As Dictionary(Of String, T()) = source _
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.GroupBy(Function(o) o.Key) _
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.ToDictionary(Function(k) k.Key,
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Function(g) g.ToArray)
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If table.ContainsKey(uniqueId) Then
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Return table(uniqueId)
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Else
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Return {}
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End If
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Else
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Return LinqAPI.Exec(Of T) _
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_
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() <= From x As T
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In source
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Where String.Equals(x.Key, uniqueId, StringComparison.OrdinalIgnoreCase)
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Select x
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End If
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End Function
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<Extension> Public Function Takes(Of T As INamedValue)(list As IEnumerable(Of String), source As IEnumerable(Of T)) As T()
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Dim table As Dictionary(Of T) = source.ToDictionary
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Dim LQuery As T() = LinqAPI.Exec(Of T) _
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_
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() <= From sId As String
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In list
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Where table.ContainsKey(sId)
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Select table(sId)
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Return LQuery
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End Function
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<Extension> Public Function Take(Of T As INamedValue)(source As IEnumerable(Of T), uniqueId As String, Optional strict As Boolean = True) As T
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Dim level As StringComparison = If(strict, StringComparison.Ordinal, StringComparison.OrdinalIgnoreCase)
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Dim LQuery As T = LinqAPI.DefaultFirst(Of T) _
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_
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() <= From o As T
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In source
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Where String.Equals(uniqueId, o.Key, comparisonType:=level)
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Select o
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Return LQuery
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End Function
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<Extension> Public Function ToEntryDictionary(Of T As IReadOnlyId)(source As IEnumerable(Of T)) As Dictionary(Of String, T)
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Return source.ToDictionary(Function(item As T) item.Identity)
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End Function
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<Extension> Public Function GetItem(Of T As IReadOnlyId)(source As IEnumerable(Of T), uniqueId As String, Optional caseSensitive As Boolean = True) As T
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Dim method As StringComparison = If(caseSensitive, StringComparison.Ordinal, StringComparison.OrdinalIgnoreCase)
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Dim LQuery = LinqAPI.DefaultFirst(Of T) _
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_
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() <= From itemObj As T
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In source
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Where String.Equals(itemObj.Identity, uniqueId, method)
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Select itemObj
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Return LQuery
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End Function
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<Extension> Public Function ToDictionary(Of T As INamedValue)(source As IEnumerable(Of T), distinct As Boolean) As Dictionary(Of T)
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If Not distinct Then
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Return source.ToDictionary
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End If
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Dim table As New Dictionary(Of T)
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Dim duplicates As New List(Of String)
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For Each x As T In source
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If Not table.ContainsKey(x.Key) Then
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Call table.Add(x.Key, x)
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Else
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duplicates += x.Key
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End If
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Next
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If duplicates.Count > 0 Then
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Call $"Dictionary table build complete, but there is dulplicated keys: {duplicates.GetJson}...".Warning
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End If
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Return table
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End Function
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End Module
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