黑马程序员——Foundation框架结构体、字符串、数组

//
//  main.m
//  01-结构体
//
//  Created by CH on 14-4-11.
//  Copyright (c) 2014年 itcast. All rights reserved.
//

#import

int main(int argc, const charchar * argv[])
{
BOOL b = CGPointEqualToPoint(CGPointMake(10, 10), CGPointMake(10, 10));//判断两个点是否相同
//依此类推，CGRect CGSize都又类似的方法
//CGSizeEqualToSize(CGSize size1, CGSize size2);
//CGRectEqualToRect(CGRect rect1, CGRect rect2);

BOOL b2 = CGRectContainsPoint(CGRectMake(50, 40, 100, 50), CGPointMake(230, 70));//reck中是否包含piont

NSLog(@"%d",b2);
return 0;
}
CGRect myRect1(CGFloat x,CGFloat y,CGFloat width,CGFloat height){
CGRect rect;
rect.origin.x = x;
rect.origin.y = y;
rect.size.width =width;
rect.size.height =height;
return rect;
}
CGRect myRect2(CGPoint p,CGSize s){
CGRect rect;
rect.origin.x = p.x;
rect.origin.y = p.y;
rect.size.width = s.width;
rect.size.height = s.height;
return rect;
}
void rect(){
//NSPoint==CGPoint==CGFloat==double

CGPoint p1 = NSMakePoint(10, 10);
NSPoint p2 = CGPointMake(10, 10);//开发中最常用

NSSize s1 = CGSizeMake(100, 50);
NSSize s2 = NSMakeSize(100, 50);
CGSize s3 = NSMakeSize(100, 30);

CGRect r1 = CGRectMake(0, 0, 100, 40);
CGRect r2 = {{0,0},{100,90}};
CGRect r3 = {p1,s2};
//CGPointZero == CGPointMake(0, 0);//表示原点
//CGSizeZero;
//CGRectZero;
CGRect r4 = {CGPointZero,CGSizeMake(100, 60)};

//将结构体转成字符串
NSString *str1 = NSStringFromPoint(p1);
NSString *str2 = NSStringFromSize(s3);
NSString *str3 = NSStringFromRect(r1);

NSLog(@"\n%@\n,%@\n,%@",str1,str2,str3);

}
void range(){

struct Date {
int year;
int month;
int day;
};
struct Date d = {2011,3,12};
struct Date d2 = {.month = 10, .year = 2013, .day = 23};

// @"i love oc" love 的范围
NSRange r1 = {2,4};//不用
NSRange r2 = {.location = 2, .length = 4};//不用
NSRange r3 = NSMakeRange(2, 4);//掌握

NSString *str = @"i love oc";
//如果找不到，length＝0，location＝NSNotFound＝＝－1
NSRange range = [str rangeOfString:@"love"];//查找某个字符串在str中的范围

NSLog(@"location = %ld,length = %ld",range.location,range.length);

}

//
// main.m
// 02-NSString
//
// Created by CH on 14-4-11.
// Copyright (c) 2014年 itcast. All rights reserved.
//
#import
int main()
{
//可变字符串
NSMutableString *s1 = [NSMutableString stringWithFormat:@"age is 20"];
//拼接内容到s1到后面
[s1 appendString:@"11,22"];//s1的值会变
//获取is的范围
NSRange range = [s1 rangeOfString:@"is"];
[s1 deleteCharactersInRange:range];
//[s1 deleteCharactersInRange:NSMakeRange(4,2)];一般不用
//不可变字符串
NSString *s2 = [NSMutableString stringWithFormat:@"age is 200"];
NSString *s3 = [s2 stringByAppendingString:@"123"];//拼接完返回新的字符串，s2本身不会改变
NSLog(@"\ns1 = %@,\ns2 = %@,\ns3 = %@",s1,s2,s3);
return 0;
}
void stringExport(){
//字符串的导出
[@"jack \njack" writeToFile:@"/Users/ch/Desktop/my.txt" atomically:YES encoding:NSUTF8StringEncoding error:nil];
NSString *str = @"1231";
NSURL *url = [NSURL fileURLWithPath:@"/Users/ch/Desktop/my2.txt"];
[str writeToURL:url atomically:YES encoding:NSUTF8StringEncoding error:nil];
}
void nSStringAll(){
//字符串的一些用法和NSURL
NSString *s1 = @"jack";
NSString *s2 = [[NSString alloc] initWithString:@"jack"];//不用
NSString *s3 = [[NSString alloc] initWithFormat:@"age is %d",10];
//C字符串 -->OC字符串
NSString *s4 = [[NSString alloc] initWithUTF8String:"jack"];
//OC字符串-->C字符串
const charchar *cs = [s4 UTF8String];//const 可以不写
//NSUTF8StringEncoding 用到中文就可以用这种编码
NSString *s5 = [[NSString alloc] initWithContentsOfFile:@"/Users/ch/Downloads/test2.txt" encoding:NSUTF8StringEncoding error:nil];
//URL:资源路径
//协议头://路径
//本地文件: file://
//网络ftp服务器:ftp://
//http://weibo.com/a.png
NSURL *url = [[NSURL alloc] initWithString:@"http://www.feilv.com"];
NSURL *url1 = [NSURL fileURLWithPath:@"/Users/ch/Downloads/test2.txt"];
NSString *s6 = [[NSString alloc] initWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
NSLog(@"s6:\n%@",s6);
}

//
//  main.m
//  03-NSArray
//
//  Created by CH on 14-4-11.
//  Copyright (c) 2014年 itcast. All rights reserved.
//

#import

int main()
{
Person *p = [[Person alloc] init];
NSArray *array = @[p,@"jack"];
//遍历方式一
for(int i = 0; i.count;i++){
NSLog(@"%@",array[i]);
}
//遍历方式二
for(id obj in array){
//      NSUInteger i ＝[array indexOfObject:obj];//当前第几次
NSLOg(@"%@",obj);
}
//遍历方式三
[array enumerateObjectsUsingBlock:^(id obj,NSUInteger idx,BOOLBOOL *stop){
//idx表示索引位置，obj表示对象，stop是用来停止遍历的
NSLog(@"%ld - %@",idx,obj);
if(idx==1){
*stop = YES;//停止了idx为1之后的对象
}
}];
//遍历方法三原理：

return 0;
}
void baseuse(){
//oc数组只能存放oc对象，不能存放非oc对象类型，比如int，struct，enum等

NSArray *array = [NSArray array];//这个array永远是空数组
//这是创建单个id的方式
NSArray *array2 = [NSArray arrayWithObject:@"jack"];
//这是创建多个id的创建方式  nil是数组元素结束的标记
NSArray *array3 = [NSArray arrayWithObjects:@"jack",@"rose", nil nil];
//创建多个值的数组
NSArray *array4 = [NSArray arrayWithObjects:@"jack",@"rose",@"Mike",@"Chenghao",nil];
//快速创建一个NSArray对象
NSArray *array5 = @[@"jack",@"rose",@"chegnhao"];

//[array2 count];和以下方式都可以
NSLog(@"%ld",array3.count);
NSLog(@"%@",[array3 objectAtIndex:1]);//这种不用
NSLog(@"%@",array3[1]);//以后都适用这种，编译器遇到这行，就自动转成上面的代码

}

#import

int main(){

return 0;
}
void NSSet(){
NSSet *s = [NSSet set];//创建一个空的set，并且永远是空
NSSet *s2 = [NSSet setWithObjects:@"jack",@"rose",nil];
[s2 anyObject];//随机拿出一个元素
}
void NSMutableSet(){
NSMutableSet *s = [NSMutableSet set];
[s addObject:@"hack"];//添加元素
[s removeObject:(id)];//删除元素
}
void NSMutableArray(){
//@[] 只创建不可变数组 NSArray
NSArray *array = @[@"jack",@"rose"];
NSMutableArray *array2 = [NSMutableArray arrayWithObjects:@"rose",@"jim",nil];//初始化时添加成员

NSMutableArray *array = [NSMutableArray array];
//添加元素
[array addObject:[[Person alloc] init];
[array addObject:@"Jack"];可以随便放，但不能放基本数据类型
//[array addObject:10];不行
//删除元素
//[array removeAllObjects];//删除所有元素
//删除指定对象
[array removeObject:@"Jack"];
[array removeObjectAtIndex:2];

return 0;
}