String.IndexOfAny Método

Source:

String.Searching.cs

Source:

String.Searching.cs

Source:

String.Searching.cs

Source:

String.Searching.cs

Source:

String.Searching.cs

public:
 int IndexOfAny(cli::array <char> ^ anyOf);

public int IndexOfAny(char[] anyOf);

member this.IndexOfAny : char[] -> int

Public Function IndexOfAny (anyOf As Char()) As Integer

Parámetros

Devoluciones

Posición de índice de base cero de la primera aparición en esta instancia en la que se encontró cualquier carácteranyOf; -1 si no se encontró ningún carácter.anyOf

Excepciones

Ejemplos

En el ejemplo siguiente se busca la primera vocal en una cadena.

char[] chars = { 'a', 'e', 'i', 'o', 'u', 'y',
                 'A', 'E', 'I', 'O', 'U', 'Y' };
String s = "The long and winding road...";
Console.WriteLine($"""
   The first vowel in
   '{s}'
   is found at index {s.IndexOfAny(chars)}
   """);

// The example displays the following output:
//       The first vowel in
//       'The long and winding road...'
//       is found at index 2

let chars = [| 'a'; 'e'; 'i'; 'o'; 'u'; 'y'
               'A'; 'E'; 'I'; 'O'; 'U'; 'Y' |]
let s = "The long and winding road..."
printfn $"The first vowel in \n   {s}\nis found at index {s.IndexOfAny chars}"

// The example displays the following output:
//       The first vowel in
//          The long and winding road...
//       is found at index 2

Module Example1
   Public Sub Run()
      Dim chars() As Char = { "a"c, "e"c, "i"c, "o"c, "u"c, "y"c,
                              "A"c, "E"c, "I"c, "O"c, "U"c, "Y"c }
      Dim s As String = "The long and winding road..."
      Console.WriteLine("The first vowel in {2}   {0}{2}is found at index {1}",
                        s, s.IndexOfAny(chars), vbCrLf)
   End Sub
End Module

' The example displays the following output:
'       The first vowel in
'          The long and winding road...
'       is found at index 2

Comentarios

La numeración de índice comienza desde cero.

La búsqueda de anyOf distingue mayúsculas de minúsculas. Si anyOf es una matriz vacía, el método devuelve -1.

Este método realiza una búsqueda ordinal (que no distingue la referencia cultural), donde un carácter se considera equivalente a otro carácter solo si sus valores escalares Unicode son los mismos. Para realizar una búsqueda sensible a la referencia cultural, use el CompareInfo.IndexOf método , donde un valor escalar Unicode que representa un carácter precomponido, como la ligadura "Æ" (U+00C6), podría considerarse equivalente a cualquier aparición de los componentes del carácter en la secuencia correcta, como "AE" (U+0041, U+0045), dependiendo de la referencia cultural.

Consulte también

• IndexOf(Char)
• LastIndexOf(Char)
• LastIndexOfAny(Char[])

Source:

String.Searching.cs

Source:

String.Searching.cs

Source:

String.Searching.cs

Source:

String.Searching.cs

Source:

String.Searching.cs

public:
 int IndexOfAny(cli::array <char> ^ anyOf, int startIndex);

public int IndexOfAny(char[] anyOf, int startIndex);

member this.IndexOfAny : char[] * int -> int

Public Function IndexOfAny (anyOf As Char(), startIndex As Integer) As Integer

Parámetros

Devoluciones

Posición de índice de base cero de la primera aparición en esta instancia en la que se encontró cualquier carácteranyOf; -1 si no se encontró ningún carácter.anyOf

Excepciones

Ejemplos

En el ejemplo siguiente se busca el índice de la aparición de cualquier carácter de la cadena "is" dentro de una subcadena de otra cadena.

string br1 = "0----+----1----+----2----+----3" +
    "----+----4----+----5----+----6----+-";
string br2 = "012345678901234567890123456789" +
    "0123456789012345678901234567890123456";
string str = "Now is the time for all good men " +
    "to come to the aid of their party.";
int start;
int at;
string target = "is";
char[] anyOf = target.ToCharArray();

start = str.Length / 2;
Console.WriteLine();
Console.WriteLine("The first character occurrence " +
    $"from position {start} to {str.Length - 1}:");
Console.WriteLine($"""
    {Environment.NewLine}{br1}{Environment.NewLine}
    {br2}{Environment.NewLine}{str}{Environment.NewLine}
    """);
Console.Write($"A character in '{target}' occurs at position: ");

at = str.IndexOfAny(anyOf, start);
if (at > -1)
    Console.Write(at);
else
    Console.Write("(not found)");
Console.WriteLine();

/*

The first character occurrence from position 33 to 66.
0----+----1----+----2----+----3----+----4----+----5----+----6----+-
0123456789012345678901234567890123456789012345678901234567890123456
Now is the time for all good men to come to the aid of their party.

A character in 'is' occurs at position: 49

*/

// Sample for String.IndexOfAny(Char[], Int32)
open System

let br1 = "0----+----1----+----2----+----3----+----4----+----5----+----6----+-"
let br2 = "0123456789012345678901234567890123456789012345678901234567890123456"
let str = "Now is the time for all good men to come to the aid of their party."
let target = "is"
let anyOf = target.ToCharArray()

let start = str.Length/2
printfn $"\nThe first character occurrence from position {start} to {str.Length - 1}."
printfn $"{br1}{Environment.NewLine}{br2}{Environment.NewLine}{str}{Environment.NewLine}"
printf $"A character in '{target}' occurs at position: "

let at = str.IndexOfAny(anyOf, start)
if at > -1 then
    printfn $"{at}"
else
    printfn "(not found)"
(*

The first character occurrence from position 33 to 66.
0----+----1----+----2----+----3----+----4----+----5----+----6----+-
0123456789012345678901234567890123456789012345678901234567890123456
Now is the time for all good men to come to the aid of their party.

A character in 'is' occurs at position: 49

*)

' Sample for String.IndexOfAny(Char[], Int32)
Class Example2
   Public Shared Sub Run()
      Dim br1 As String = "0----+----1----+----2----+----3----+----4----+----5----+----6----+-"
      Dim br2 As String = "0123456789012345678901234567890123456789012345678901234567890123456"
      Dim str As String = "Now is the time for all good men to come to the aid of their party."
      Dim start As Integer
      Dim at As Integer
      Dim target As String = "is"
      Dim anyOf As Char() = target.ToCharArray()

      start = str.Length / 2
      Console.WriteLine()
      Console.WriteLine("Search for a character occurrence from position {0} to {1}.", _
                           start, str.Length - 1)
      Console.WriteLine("{1}{0}{2}{0}{3}{0}", Environment.NewLine, br1, br2, str)
      Console.Write("A character in '{0}' occurs at position: ", target)
      at = str.IndexOfAny(anyOf, start)
      If at > - 1 Then
         Console.Write(at)
      Else
         Console.Write("(not found)")
      End If
      Console.WriteLine()
   End Sub
End Class
'
'
'Search for a character occurrence from position 33 to 66.
'0----+----1----+----2----+----3----+----4----+----5----+----6----+-
'0123456789012345678901234567890123456789012345678901234567890123456
'Now is the time for all good men to come to the aid of their party.
'
'A character in 'is' occurs at position: 49
'

Comentarios

La numeración de índice comienza desde cero. El startIndex parámetro puede oscilar entre 0 y uno menor que la longitud de la instancia de cadena.

La búsqueda va de startIndex hasta el final de la cadena.

La búsqueda de anyOf distingue mayúsculas de minúsculas.

Este método realiza una búsqueda ordinal (que no distingue la referencia cultural), donde un carácter se considera equivalente a otro carácter solo si su valor escalar Unicode es el mismo. Para realizar una búsqueda sensible a la referencia cultural, use el CompareInfo.IndexOf método , donde un valor escalar Unicode que representa un carácter precomponido, como la ligadura "Æ" (U+00C6), podría considerarse equivalente a cualquier aparición de los componentes del carácter en la secuencia correcta, como "AE" (U+0041, U+0045), dependiendo de la referencia cultural.

Consulte también

• Char
• Int32
• Array
• IndexOf(Char)
• LastIndexOf(Char)
• LastIndexOfAny(Char[])

Source:

String.Searching.cs

Source:

String.Searching.cs

Source:

String.Searching.cs

Source:

String.Searching.cs

Source:

String.Searching.cs

public:
 int IndexOfAny(cli::array <char> ^ anyOf, int startIndex, int count);

public int IndexOfAny(char[] anyOf, int startIndex, int count);

member this.IndexOfAny : char[] * int * int -> int

Public Function IndexOfAny (anyOf As Char(), startIndex As Integer, count As Integer) As Integer

Parámetros

Devoluciones

Posición de índice de base cero de la primera aparición en esta instancia en la que se encontró cualquier carácteranyOf; -1 si no se encontró ningún carácter.anyOf

Excepciones

Ejemplos

En el ejemplo siguiente se busca el índice de la aparición de cualquier carácter de la cadena "aid" dentro de una subcadena de otra cadena.

string br1 = "0----+----1----+----2----+----3----" +
    "+----4----+----5----+----6----+-";
string br2 = "012345678901234567890123456789" +
    "0123456789012345678901234567890123456";
string str = "Now is the time for all good men " +
    "to come to the aid of their party.";
string target = "aid";
char[] anyOf = target.ToCharArray();

int start = (str.Length - 1) / 3;
int count = (str.Length - 1) / 4;
Console.WriteLine();
Console.WriteLine("The first character occurrence from " +
    $"position {start} for {count} characters:");
Console.WriteLine($"""
    {Environment.NewLine}{br1}{Environment.NewLine}{br2}
    {Environment.NewLine}{str}{Environment.NewLine}
    """);
Console.Write($"A character in '{target}' occurs at position: ");

int at = str.IndexOfAny(anyOf, start, count);
if (at > -1)
    Console.Write(at);
else
    Console.Write("(not found)");
Console.WriteLine();

/*

The first character occurrence from position 22 for 16 characters.
0----+----1----+----2----+----3----+----4----+----5----+----6----+-
0123456789012345678901234567890123456789012345678901234567890123456
Now is the time for all good men to come to the aid of their party.

A character in 'aid' occurs at position: 27

*/

// Sample for String.IndexOfAny(Char[], Int32, Int32)
open System

let br1 = "0----+----1----+----2----+----3----+----4----+----5----+----6----+-"
let br2 = "0123456789012345678901234567890123456789012345678901234567890123456"
let str = "Now is the time for all good men to come to the aid of their party."
let target = "aid"
let anyOf = target.ToCharArray()

let start = (str.Length - 1) / 3
let count = (str.Length - 1) / 4
printfn $"\nThe first character occurrence from position {start} for {count} characters."
printfn $"{br1}{Environment.NewLine}{br2}{Environment.NewLine}{str}{Environment.NewLine}"
printf $"A character in '{target}' occurs at position: "

let at = str.IndexOfAny(anyOf, start, count)
if at > -1 then
    printfn $"{at}"
else
    printfn "(not found)"
(*

The first character occurrence from position 22 for 16 characters.
0----+----1----+----2----+----3----+----4----+----5----+----6----+-
0123456789012345678901234567890123456789012345678901234567890123456
Now is the time for all good men to come to the aid of their party.

A character in 'aid' occurs at position: 27

*)

' Sample for String.IndexOfAny(Char[], Int32, Int32)
Class Example3
   Public Shared Sub Run()
      Dim br1 As String = "0----+----1----+----2----+----3----+----4----+----5----+----6----+-"
      Dim br2 As String = "0123456789012345678901234567890123456789012345678901234567890123456"
      Dim str As String = "Now is the time for all good men to come to the aid of their party."
      Dim start As Integer
      Dim at As Integer
      Dim count As Integer
      Dim target As String = "aid"
      Dim anyOf As Char() = target.ToCharArray()

      start =(str.Length - 1) / 3
      count =(str.Length - 1) / 4
      Console.WriteLine()
      Console.WriteLine("The first character occurrence from position {0} for {1} characters.", start, count)
      Console.WriteLine("{1}{0}{2}{0}{3}{0}", Environment.NewLine, br1, br2, str)
      Console.Write("A character in '{0}' occurs at position: ", target)

      at = str.IndexOfAny(anyOf, start, count)
      If at > - 1 Then
         Console.Write(at)
      Else
         Console.Write("(not found)")
      End If
      Console.WriteLine()
   End Sub
End Class
'
'The first character occurrence from position 22 for 16 characters.
'0----+----1----+----2----+----3----+----4----+----5----+----6----+-
'0123456789012345678901234567890123456789012345678901234567890123456
'Now is the time for all good men to come to the aid of their party.
'
'A character in 'aid' occurs at position: 27
'

Comentarios

La búsqueda comienza en startIndex y continúa hasta startIndex + count -1. El carácter en startIndex + count no se incluye en la búsqueda.

La numeración de índice comienza desde cero. El startIndex parámetro puede oscilar entre 0 y uno menor que la longitud de la instancia de cadena.

La búsqueda de anyOf distingue mayúsculas de minúsculas.

Este método realiza una búsqueda ordinal (que no distingue la referencia cultural), donde un carácter se considera equivalente a otro carácter solo si su valor escalar Unicode es el mismo. Para realizar una búsqueda sensible a la referencia cultural, use el CompareInfo.IndexOf método , donde un valor escalar Unicode que representa un carácter precomponido, como la ligadura "Æ" (U+00C6), podría considerarse equivalente a cualquier aparición de los componentes del carácter en la secuencia correcta, como "AE" (U+0041, U+0045), dependiendo de la referencia cultural.

Consulte también

• Char
• Int32
• Array
• IndexOf(Char)
• LastIndexOf(Char)
• LastIndexOfAny(Char[])