Descripción

Representa texto como una serie de caracteres Unicode.

Unity usa la clase .Net System.String para cadenas. Ver la documentación Microsoft MSDN para Strings para mas detalles.

Nota: en c# string es un alias para System.String . Esto significa que puedes usar cualquiera de los dos string o String in tu código( Si tienes agregado using System en la parte superior de su script .) Nota: En Javascript las cadenas son representadas usando String que se debe utilizar en su código script de Unity. Éstos son algunos de los usos básicos de la clase String.

#pragma strict

function Start () {
    var s : String = "hello";
    Debug.Log(s);                    // prints hello
    s = String.Format("{0} {1}", s, "world");
    Debug.Log(s);                    // prints hello world
    s = String.Concat("hello","world");
    Debug.Log(s);                    // prints helloworld
    s = s.ToUpper(); 
    Debug.Log(s);                    // prints HELLOWORLD
    s = s.ToLower();
    Debug.Log(s);                    // prints helloworld

    //Debug.Log(s.CharAt(1));        // CharAt not supported, produces compiler error
                                     // instead use array syntax below
    Debug.Log(s[1]);                 // prints e
    
    var c : char = 'x'[0];           // slight odd JS way of specifying a char
                                     // 'x' is a string and [0] means first character
                                     
    Debug.Log(s.IndexOf(c));         // prints -1 (s does not contain an x)
    
    var i : int = 42;
    s = i.ToString();
    Debug.Log(s);                    // prints 42

    s = "-43";
    i = int.Parse(s);
    Debug.Log(i);                    // prints -43
    
    var f : float = 3.14159265358979f;
    s = f.ToString();
    Debug.Log(s);                    // prints 3.141593 (which is an approximation)
    
    s = "-7.14159265358979";
    f = float.Parse(s);
    Debug.Log(f);                    // prints -7.141593 (which is an approximation)
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Start() {
         // prints hello
        string s = "hello";
        Debug.Log(s);
 

        // prints hello world
        s = string.Format("{0} {1}", s, "world");
        Debug.Log(s);

        // prints helloworld
        s = string.Concat("hello", "world");
        Debug.Log(s);

        // prints HELLOWORLD
        s = s.ToUpper();
        Debug.Log(s);

        // prints helloworld
        s = s.ToLower();
        Debug.Log(s);

        // prints 'e'
        Debug.Log(s[1]);

        // prints 42
        int i = 42;
        s = i.ToString();
        Debug.Log(s);

        // prints -43
        s = "-43";
        i = int.Parse(s);
        Debug.Log(i);

        // prints 3.141593 (an approximation)
        float f = 3.14159265359F;
        s = f.ToString();
        Debug.Log(s);

        // prints -7.141593 (an approximation)
        s = "-7.14159265358979";
        f = float.Parse(s);
        Debug.Log(f);
    }
}

Este ejemplo muestra como puedes examinar la clase String y ver qué métodos contiene.

// Javascript
#pragma strict

import System;
import System.Reflection;

function Start () {

    var t : Type = System.String;

    // Iterate over all the methods from the System.String class and display
    // return type and parameters.
    // This reveals all the things you can do with a String.
    
    for (var mi : MethodInfo in t.GetMethods()) {
    
        var s : System.String = System.String.Format("{0} {1} (", mi.ReturnType, mi.Name);
        var pars : ParameterInfo[] = mi.GetParameters();
    
        for (var j : int = 0; j < pars.Length; j++) {
            s = String.Concat(s, String.Format("{0}{1}", pars[j].ParameterType,
                (j == pars.Length-1) ? "" : ", "));
        }
        s = String.Concat(s, ")");
        Debug.Log(s);
    }
}

using System;
using System.Reflection;
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Start() {
        Type t = typeof(System.String);
     
        // Iterate over all the methods from the System.String class and display
        // return type and parameters.
        // This reveals all the things you can do with a String.
        foreach (MethodInfo mi in t.GetMethods()) {
            System.String s = System.String.Format("{0} {1} (", mi.ReturnType, mi.Name);
            ParameterInfo[] pars = mi.GetParameters();
            
            for (int j = 0; j < pars.Length; j++) {
                s = String.Concat(s, String.Format("{0}{1}", pars[j].ParameterType, ((j == pars.Length - 1) ? "" : ", ")));
            }
            s = String.Concat(s, ")");
            Debug.Log(s);
        }
    }
}

Variables