//
// main.m
// OC1_数组创建
//
// Created by zhangxueming on 15/6/11.
// Copyright (c) 2015年 zhangxueming. All rights reserved.
//
#import <Foundation/Foundation.h>
//NSArray
//创建不可变数组对象
//NSMutableArray
//创建可变数组对象
//数组中的元素都是对象可以为任意类型的对象
//数组中存储的是对象的引用(对象的地址)
int main(
int argc,
const char *
argv[]) {
@autoreleasepool {
//xcode4.0
NSArray *array1 = @[
@"one",
@"two",
@"three"];
NSLog(@"array1 = %@", array1);
//构造方法
//用给定对象创建数组对象
NSArray *array2 = [[NSArray alloc] initWithObjects:
@"helloworld",[NSNumber numberWithInt:
123],[NSDate date], [NSNumber numberWithFloat:
3.14], nil];
NSLog(@"array2 = %@", array2);
//用其它数组创建数组对象
NSArray *array3 =
[[NSArray alloc] initWithArray:array1];
NSLog(@"array3 = %@", array3);
//NSArray *array4 = [[NSArray alloc] initWithArray:array2 copyItems:YES];//retain copy
//类方法
//创建一个空的数组对象
NSArray *array5 =
[NSArray array];
NSLog(@"array5 = %@", array5);
NSArray *array6 = [NSArray arrayWithObjects:
@"one",
@"two",
@"three", nil];
NSLog(@"array6 = %@", array6);
NSArray *array7 =
[NSArray arrayWithArray:array6];
NSLog(@"array7 = %@", array7);
}
return 0;
}
转载于:https://www.cnblogs.com/0515offer/p/4569773.html
