Table of contents
19.FindLastIndex(Int32, Int32, Predicate)
20.FindLastIndex(Int32, Predicate)
C# List Detailed Explanation 1
1.Add(T)，2.AddRange(IEnumerable)，3.AsReadOnly()，4.BinarySearch(T)，
C# List Detailed Explanation 2
5.Clear()，6.Contains(T)，7.ConvertAll(Converter)，8.CopyTo(Int32, T[], Int32, Int32)，9.CopyTo(T[])，10.CopyTo(T[], Int32)
C# List Detailed Explanation 3
11.Equals(Object)，12.Exists(Predicate)，13.Find(Predicate)，14.FindAll(Predicate)，15.FindIndex(Int32, Int32, Predicate)，16.FindIndex(Int32, Predicate)，17.FindIndex(Predicate)
C# List Detailed Explanation 4
18.FindLast(Predicate)，19.FindLastIndex(Int32, Int32, Predicate)，20.FindLastIndex(Int32, Predicate)，21.FindLastIndex(Predicate)，22.ForEach(Action)，23.GetEnumerator()，24.GetHashCode()，25.GetRange(Int32, Int32)
C# List Detailed Explanation 5
26.GetType()，27.IndexOf(T)，28.IndexOf(T, Int32)，29.IndexOf(T, Int32, Int32)，30.Insert(Int32, T)，31.InsertRange(Int32, IEnumerable)，32.LastIndexOf(T)，33.LastIndexOf(T, Int32)，34.LastIndexOf(T, Int32, Int32)
C# List Detailed Explanation 6
35.MemberwiseClone()，36.Remove(T)，37.RemoveAll(Predicate)，38.RemoveAt(Int32)，39.RemoveRange(Int32, Int32)，40.Reverse()，41.Reverse(Int32, Int32)
C# List Detailed Explanation VII
42.Sort()，43.ToArray()，44.ToString()，45.TrimExcess()，46.TrueForAll(Predicate)
C# List Detailed Explanation 1 - Xiong Siyu's Blog - CSDN Blog
C# List Detailed Explanation II - Xiong Siyu's Blog - CSDN Blog
C# List Detailed Explanation 3 - Xiong Siyu's Blog - CSDN Blog
C# List Detailed Explanation Five_Xiong Siyu's Blog - CSDN Blog
C# List Detailed Explanation 6_Xiong Siyu's Blog - CSDN Blog
C# List Detailed Explanation VII - Xiong Siyu's Blog - CSDN Blog
18.FindLast(Predicate<T>)
Searches for elements that match the conditions defined by the specified predicate and returns the last matching element in the entire List<T>.
public T? FindLast (Predicate<T> match);Parameters
match
Predicate<T>
The Predicate<T> delegate that defines the criteria for the elements to search for.
Returns the last element
of T
that matches the conditions defined by the specified predicate, if found; otherwise, the default value of type T.
case:
using System;
using System.Collections.Generic;
namespace ListTest
{
internal class Program
{
static void Main(string[] args)
{
List<int> list1 = new List<int>() { 1, 3, 5, 5, 6 };
int value = list1.FindLast(x => x == 5);
Console.WriteLine("值：{0}", value);
Console.ReadKey();
}
}
}run:
19.FindLastIndex(Int32, Int32, Predicate<T>)
Searches for elements that match the conditions defined by the specified predicate, and returns the zero-based index of the last occurrence within the range of elements in the List<T> that contains the specified number of elements up to the end of the specified index.
public int FindLastIndex (int startIndex, int count, Predicate<T> match);Parameter
startIndex
Int32
The zero-based start index of the backward search.
count
Int32
The number of elements in the section to search.
match
Predicate<T>
A Predicate<T> delegate that defines the criteria for the elements to search for.
Returns
the Int32
zero-based index of the last element found that matches the condition defined by match if the element was found; otherwise -1.
case:
using System;
using System.Collections.Generic;
namespace ListTest
{
internal class Program
{
static void Main(string[] args)
{
List<int> list1 = new List<int>() { 1, 3, 5, 5, 6 };
int index = list1.FindLastIndex(x => x == 5);
Console.WriteLine("下标：{0}", index);
Console.ReadKey();
}
}
}run:
20.FindLastIndex(Int32, Predicate<T>)
Searches for elements that match the conditions defined by the specified predicate and returns the zero-based index of the last occurrence in the List<T> ranging from the first element to the element at the specified index.
public int FindLastIndex (int startIndex, Predicate<T> match);Parameter
startIndex
Int32
The zero-based start index of the backward search.
match
Predicate<T>
A Predicate<T> delegate that defines the criteria for the elements to search for.
Returns
the Int32
zero-based index of the last element found that matches the condition defined by match if the element was found; otherwise -1.
case:
using System;
using System.Collections.Generic;
namespace ListTest
{
internal class Program
{
static void Main(string[] args)
{
List<int> list1 = new List<int>() { 1, 3, 5, 5, 6 };
int index = list1.FindLastIndex(2, x => x == 5);
Console.WriteLine("下标：{0}", index);
Console.ReadKey();
}
}
}run:
21.FindLastIndex(Predicate<T>)
Searches for elements that match the conditions defined by the specified predicate and returns the zero-based index of the last matching element in the entire List<T>.
public int FindLastIndex (Predicate<T> match);Parameters
match
Predicate<T>
The Predicate<T> delegate that defines the criteria for the elements to search for.
Returns
the Int32
zero-based index of the last element found that matches the condition defined by match if the element was found; otherwise -1.
case:
using System;
using System.Collections.Generic;
namespace ListTest
{
internal class Program
{
static void Main(string[] args)
{
List<int> list1 = new List<int>() { 1, 3, 5, 5, 6 };
int index = list1.FindLastIndex(x => x == 5);
Console.WriteLine("下标：{0}", index);
Console.ReadKey();
}
}
}run:
22.ForEach(Action<T>)
Performs the specified operation on each element of the List<T>.
public void ForEach (Action<T> action);Parameters
action
Action<T>
The Action<T> delegate to execute on each element of the List<T>.
case:
using System;
using System.Collections.Generic;
namespace ListTest
{
internal class Program
{
static void Main(string[] args)
{
List<string> names = new List<string>();
names.Add("Bruce");
names.Add("Alfred");
names.Add("Tim");
names.Add("Richard");
names.ForEach(Print);
Console.ReadKey();
}
static void Print(string s)
{
Console.WriteLine(s);
}
}
}run:
23.GetEnumerator()
Returns an enumerator that iterates through the List<T>.
public System.Collections.Generic.List<T>.Enumerator GetEnumerator ();Returns
List<T>.Enumerator
for List<T>.Enumerator of List<T>.
case:
using System;
using System.Collections.Generic;
namespace ListTest
{
internal class Program
{
static void Main(string[] args)
{
List<string> names = new List<string>();
names.Add("Bruce");
names.Add("Alfred");
names.Add("Tim");
names.Add("Richard");
List<string>.Enumerator strings = names.GetEnumerator();
Console.ReadKey();
}
}
}24.GetHashCode()
as the default hash function. (inherited from Object)
public virtual int GetHashCode ();Returns the
Int32
hash code of the current object.
case:
using System;
using System.Collections.Generic;
namespace ListTest
{
internal class Program
{
static void Main(string[] args)
{
List<string> names = new List<string>();
names.Add("Bruce");
names.Add("Alfred");
names.Add("Tim");
names.Add("Richard");
int code = names.GetHashCode();
Console.WriteLine(code);
Console.ReadKey();
}
}
}run:
25.GetRange(Int32, Int32)
Creates a shallow copy of a range of elements in the source List<T>.
public System.Collections.Generic.List<T> GetRange (int index, int count);Parameters
index
Int32
The zero-based List<T> index at the beginning of the range.
count
Int32
The number of elements in the range.
Returns a shallow copy of
the List<T>
range of elements in the source List<T>.
case:
using System;
using System.Collections.Generic;
namespace ListTest
{
internal class Program
{
static void Main(string[] args)
{
List<int> list1 = new List<int>() { 1, 3, 5, 5, 6 };
List<int> list2 = list1.GetRange(1, 2);
Console.WriteLine(string.Join("-", list2));
Console.ReadKey();
}
}
}run:
Chapter 4 / 7 End