Namespaces

 

C++

Lenguaje

Cabeceras

Conceptos

Biblioteca de utilidades

Biblioteca de cadenas

Biblioteca de contenedores

Biblioteca de algoritmos

Biblioteca de iteradores

Biblioteca numérica

Biblioteca de entrada/salida

Biblioteca de localización

Biblioteca de expresiones regulares (C++11)

Biblioteca de operaciones atómicas (C++11)

Biblioteca de tareas/subprocesos (C++11)

 

Lenguaje C++

Los temas generales Original: General topics The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Preprocessor Comentarios Palabras clave	Tabla ASCII Las secuencias de escape Historia de C++
Control de flujo Original: Flow control The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Sentencias condicionales ejecución Original: Conditional execution statements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
if statement	switch statement
Instrucciones de iteración Original: Iteration statements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
for loop range-for loop (C++11)	while loop do-while loop
Ir declaraciones Original: Jump statements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
continue statement break statement	goto statement return statement
Funciones Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
declaración de la función
lambda declaración de la función
función de plantilla
especificador inline
especificaciones de excepción (obsoleto)
noexcept especificador (C++11)
Excepciones Original: Exceptions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
tirar expresión	bloque try-catch
Los espacios de nombres Original: Namespaces The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
espacio de nombres declaración	alias de espacios de nombres
Tipos Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
tipos fundamentales tipos de compuestos los tipos de enumeración	tipos de unión tipos de funciones
decltype specifier (C++11)
Los especificadores Original: Specifiers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
cv especificadores
almacenamiento duración especificadores
constexpr especificador (C++11)
auto especificador (C++11)
alignas especificador (C++11)
Inicialización Original: Initialization The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
predeterminado de inicialización valor de inicialización cero de inicialización copiar inicialización inicialización directa	inicialización de agregados lista de inicialización (C++11) inicialización constante referencia de inicialización

Los literales Original: Literals The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
literales enteros Los literales de caracteres Los literales de punto flotante literales de cadena	Los literales booleanos nullptr (C++11) definido por el usuario (C++11)
Expresiones Original: Expressions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
categorías de valor orden de evaluación	los operadores prioridad de los operadores
representaciones alternativas
Utilidades Original: Utilities The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Tipos Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
typedef declaration
alias de tipo de declaración (C++11)
atributos (C++11)
Lanza Original: Casts The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
conversiones implícitas
const_cast conversion
static_cast conversion
dynamic_cast conversion
reinterpret_cast conversion
C-cast estilo y funcional
De asignación de memoria Original: Memory allocation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
new expression	delete expression
Clases Original: Classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
clase de declaración this pointer acceder a los especificadores	amigo especificador listas de inicializadores
Clase propiedades específicas de la función Original: Class-specific function properties The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
función virtual anular especificador (C++11) último especificador (C++11)	explícita (C++11) estático
Funciones especiales miembro Original: Special member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
default constructor copiar constructor mover constructor (C++11)	copiar asignación mover asignación (C++11) destructor
Plantillas Original: Templates The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
clase de plantilla
función de plantilla
plantilla de especialización
paquetes de parámetros (C++11)
Varios Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Montaje en línea

 

Espacios de nombres proporcionar un método para evitar conflictos de nombres en grandes proyectos .

Original:

Namespaces provide a method for preventing name conflicts in large projects.

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Símbolos declaradas dentro de un bloque de espacio de nombres se colocan en un ámbito con nombre que les impide ser confundido con símbolos que se denominen en otros ámbitos .

Original:

Symbols declared inside a namespace block are placed in a named scope that prevents them from being mistaken for identically-named symbols in other scopes.

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Múltiples declaraciones de espacios de nombres con el mismo nombre se les permite, dando lugar a un espacio de nombres incluyendo todos los símbolos de todas esas declaraciones .

Original:

Multiple declarations of namespaces with the same name are allowed, resulting in a namespace including all symbols from all such declarations.

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Sintaxis

namespace ns_name { declarations }	(1)
inline namespace ns_name { declarations }	(2)	(desde C++11)
ns_name::name	(3)
using namespace ns_name;	(4)
using ns_name::name;	(5)

Explicación

# Declaración de la name espacio de nombres .

Original:

# Declaration of the namespace name.

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# Declaración de la name espacio de nombres. Las definiciones aparecen tanto dentro como name su espacio de nombres contiene

Original:

# Declaration of the namespace name. Definitions will appear both inside name and its enclosing namespace

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Camino # Estándar de acceso al contenido de espacio de nombres .

Original:

# Standard way of accessing namespace content.

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# Hacer que todos los símbolos de un espacio de acceso en el ámbito de aplicación de la directiva using .

Original:

# Making all symbols of a namespace accessible in the scope of the using directive.

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# Realización de una simbología específica de un espacio de nombres accesibles en el ámbito de aplicación de la directiva using .

Original:

# Making a specific symbols of a namespace accessible in the scope of the using directive.

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Ejemplo

En este ejemplo se muestra cómo utilizar un espacio de nombres para crear una clase que ya ha sido nombrado en el espacio de nombres std .

Original:

This example shows how to use a namespace to create a class that already has been named in the std namespace.

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#include <vector>
 
namespace vec {
 
    template< typename T >
    class vector {
        // ...
    };
 
} // of vec
 
int main()
{
    std::vector<int> v1; // Standard vector.
    vec::vector<int> v2; // User defined vector.
 
    v1 = v2; // Error: v1 and v2 are different object's type.
 
    {
        using namespace std;
        vector<int> v3; // Same as std::vector
        v1 = v3; // OK
    }
 
    {
        using vec::vector;
        vector<int> v4; // Same as vec::vector
        v2 = v4; // OK
    }
 
    return 0;
}

Ver también

alias de espacios de nombres	crea un alias de un espacio de nombres existente Original: creates an alias of an existing namespace The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.