ios html数组,[转载]IOS中字符串与数组的处理
//一、NSString
//1、创建常量字符串。
NSString *astring = @"This is a String!";
//2、创建空字符串,给予赋值。
NSString *astring = [[NSString alloc] init];
astring = @"This is a String!";
[astring release];
NSLog(@"astring:%@",astring);
//3、在以上方法中,提升速度:initWithString方法
NSString *astring = [[NSString alloc] initWithString:@"This is a
String!"];
NSLog(@"astring:%@",astring);
[astring release];
//4、用标准c创建字符串:initWithCString方法
char *Cstring = "This is a String!";
NSString *astring = [[NSString alloc]
initWithCString:Cstring];
NSLog(@"astring:%@",astring);
[astring release];
//5、创建格式化字符串:占位符(由一个%加一个字符组成)
int i = 1;
int j = 2;
NSString *astring = [[NSString alloc] initWithString:[NSString
stringWithFormat:@"%d.This is %i string!",i,j]];
NSLog(@"astring:%@",astring);
[astring release];
//6、创建临时字符串
NSString *astring;
astring = [NSString stringWithCString:"This is a temporary
string"];
NSLog(@"astring:%@",astring);
NSString *path = @"astring.text";
NSString *astring = [[NSString alloc]
initWithContentsOfFile:path];
NSLog(@"astring:%@",astring);
[astring release];
NSString *astring = [[NSString alloc] initWithString:@"This is a
String!"];
NSLog(@"astring:%@",astring);
NSString *path = @"astring.text";
[astring writeToFile: path atomically: YES];
[astring release];
//用C比较:strcmp函数
char string1[] = "string!";
char string2[] = "string!";
if(strcmp(string1, string2) = = 0)
{
NSLog(@"1");
}
//isEqualToString方法
NSString *astring01 = @"This is a String!";
NSString *astring02 = @"This is a String!";
BOOL result = [astring01 isEqualToString:astring02];
NSLog(@"result:%d",result);
//compare方法(comparer返回的三种值)
NSString *astring01 = @"This is a String!";
NSString *astring02 = @"This is a String!";
BOOL result = [astring01 compare:astring02] = =
NSOrderedSame;
NSLog(@"result:%d",result);
//NSOrderedSame判断两者内容是否相同
NSString *astring01 = @"This is a String!";
NSString *astring02 = @"this is a String!";
BOOL result = [astring01 compare:astring02] = =
NSOrderedAscending;
NSLog(@"result:%d",result);
//NSOrderedAscending判断两对象值的大小(按字母顺序进行比较,astring02大于astring01为真)
NSString *astring01 = @"this is a String!";
NSString *astring02 = @"This is a String!";
BOOL result = [astring01 compare:astring02] = =
NSOrderedDescending;
NSLog(@"result:%d",result);
//NSOrderedDescending判断两对象值的大小(按字母顺序进行比较,astring02小于astring01为真)
//不考虑大小写比较字符串1
NSString *astring01 = @"this is a String!";
NSString *astring02 = @"This is a String!";
BOOL result = [astring01 caseInsensitiveCompare:astring02] = =
NSOrderedSame;
NSLog(@"result:%d",result);
//NSOrderedDescending判断两对象值的大小(按字母顺序进行比较,astring02小于astring01为真)
//不考虑大小写比较字符串2
NSString *astring01 = @"this is a String!";
NSString *astring02 = @"This is a String!";
BOOL result = [astring01 compare:astring02
options:NSCaseInsensitiveSearch | NSNumericSearch] = =
NSOrderedSame;
NSLog(@"result:%d",result);
//NSCaseInsensitiveSearch:不区分大小写比较 NSLiteralSearch:进行完全比较,区分大小写
NSNumericSearch:比较字符串的字符个数,而不是字符值。
NSString *string1 = @"A String";
NSString *string2 = @"String";
NSLog(@"string1:%@",[string1 uppercaseString]);//大写
NSLog(@"string2:%@",[string2 lowercaseString]);//小写
NSLog(@"string2:%@",[string2 capitalizedString]);//首字母大小
NSString *string1 = @"This is a string";
NSString *string2 = @"string";
NSRange range = [string1 rangeOfString:string2];
int location = range.location;
int leight = range.length;
NSString *astring = [[NSString alloc] initWithString:[NSString
stringWithFormat:@"Location:%i,Leight:%i",location,leight]];
NSLog(@"astring:%@",astring);
[astring release];
//-substringToIndex: 从字符串的开头一直截取到指定的位置,但不包括该位置的字符
NSString *string1 = @"This is a string";
NSString *string2 = [string1 substringToIndex:3];
NSLog(@"string2:%@",string2);
//-substringFromIndex: 以指定位置开始(包括指定位置的字符),并包括之后的全部字符
NSString *string1 = @"This is a string";
NSString *string2 = [string1 substringFromIndex:3];
NSLog(@"string2:%@",string2);
//-substringWithRange: //按照所给出的位置,长度,任意地从字符串中截取子串
NSString *string1 = @"This is a string";
NSString *string2 = [string1 substringWithRange:NSMakeRange(0,
4)];
NSLog(@"string2:%@",string2);
//扩展路径
NSString *Path = @"~/NSData.txt";
NSString *absolutePath = [Path stringByExpandingTildeInPath];
NSLog(@"absolutePath:%@",absolutePath);
NSLog(@"Path:%@",[absolutePath
stringByAbbreviatingWithTildeInPath]);
//文件扩展名
NSString *Path = @"~/NSData.txt";
NSLog(@"Extension:%@",[Path pathExtension]);
//stringWithCapacity:
NSMutableString *String;
String = [NSMutableString stringWithCapacity:40];
//appendString: and appendFormat:
NSMutableString *String1 = [[NSMutableString alloc]
initWithString:@"This is a NSMutableString"];
//[String1 appendString:@", I will be adding some
character"];
[String1 appendFormat:[NSString stringWithFormat:@", I will be
adding some character"]];
NSLog(@"String1:%@",String1);
*/
//-insertString: atIndex:
NSMutableString *String1 = [[NSMutableString alloc]
initWithString:@"This is a NSMutableString"];
[String1 insertString:@"Hi! " atIndex:0];
NSLog(@"String1:%@",String1);
//-setString:
NSMutableString *String1 = [[NSMutableString alloc]
initWithString:@"This is a NSMutableString"];
[String1 setString:@"Hello Word!"];
NSLog(@"String1:%@",String1);
//-setString:
NSMutableString *String1 = [[NSMutableString alloc]
initWithString:@"This is a NSMutableString"];
[String1 replaceCharactersInRange:NSMakeRange(0, 4)
withString:@"That"];
NSLog(@"String1:%@",String1);
//01:检查字符串是否以另一个字符串开头- (BOOL) hasPrefix: (NSString *)
aString;
NSString *String1 = @"NSStringInformation.txt";
[String1 hasPrefix:@"NSString"] = = 1 ?NSLog(@"YES") :
NSLog(@"NO");
[String1 hasSuffix:@".txt"] = = 1 ?NSLog(@"YES") :
NSLog(@"NO");
//02:查找字符串某处是否包含其它字符串 - (NSRange) rangeOfString: (NSString *)
aString,这一点前面在串中搜索子串用到过;
//NSArray *array = [[NSArray alloc] initWithObjects:
@"One",@"Two",@"Three",@"Four",nil];
self.dataArray = array;
[array release];
//- (unsigned) Count;数组所包含对象个数;
NSLog(@"self.dataArray cound:%d",[self.dataArray count]);
//- (id) objectAtIndex: (unsigned int) index;获取指定索引处的对象;
NSLog(@"self.dataArray cound 2:%@",[self.dataArray
objectAtIndex:2]);
//arrayWithArray:
//NSArray *array1 = [[NSArray alloc] init];
NSMutableArray *MutableArray = [[NSMutableArray alloc] init];
NSArray *array = [NSArray arrayWithObjects:
@"a",@"b",@"c",nil];
NSLog(@"array:%@",array);
MutableArray = [NSMutableArray arrayWithArray:array];
NSLog(@"MutableArray:%@",MutableArray);
array1 = [NSArray arrayWithArray:array];
NSLog(@"array1:%@",array1);
//Copy
//id obj;
NSMutableArray *newArray = [[NSMutableArray alloc] init];
NSArray *oldArray = [NSArray arrayWithObjects:
@"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
NSLog(@"oldArray:%@",oldArray);
for(int i = 0; i < [oldArray count]; i++)
{
obj = [[oldArray objectAtIndex:i] copy];
[newArray addObject: obj];
}
//
NSLog(@"newArray:%@", newArray);
[newArray release];
//快速枚举
//NSMutableArray *newArray = [[NSMutableArray alloc]
init];
NSArray *oldArray = [NSArray arrayWithObjects:
@"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
NSLog(@"oldArray:%@",oldArray);
for(id obj in oldArray)
{
[newArray addObject: obj];
}
//
NSLog(@"newArray:%@", newArray);
[newArray release];
//Deep copy
//NSMutableArray *newArray = [[NSMutableArray alloc]
init];
NSArray *oldArray = [NSArray arrayWithObjects:
@"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
NSLog(@"oldArray:%@",oldArray);
newArray =
(NSMutableArray*)CFPropertyListCreateDeepCopy(kCFAllocatorDefault,
(CFPropertyListRef)oldArray,
kCFPropertyListMutableContainers);
NSLog(@"newArray:%@", newArray);
[newArray release];
//Copy and sort
//NSMutableArray *newArray = [[NSMutableArray alloc]
init];
NSArray *oldArray = [NSArray arrayWithObjects:
@"b",@"a",@"e",@"d",@"c",@"f",@"h",@"g",nil];
NSLog(@"oldArray:%@",oldArray);
NSEnumerator *enumerator;
enumerator = [oldArray objectEnumerator];
id obj;
while(obj = [enumerator nextObject])
{
[newArray addObject: obj];
}
[newArray sortUsingSelector:@selector(compare:)];
NSLog(@"newArray:%@", newArray);
[newArray release];
//从字符串分割到数组- componentsSeparatedByString:
NSString *string = [[NSString alloc]
initWithString:@"One,Two,Three,Four"];
NSLog(@"string:%@",string);
NSArray *array = [string componentsSeparatedByString:@","];
NSLog(@"array:%@",array);
[string release];
//从数组合并元素到字符串- componentsJoinedByString:
NSArray *array = [[NSArray alloc]
initWithObjects:@"One",@"Two",@"Three",@"Four",nil];
NSString *string = [array componentsJoinedByString:@","];
NSLog(@"string:%@",string);
//NSArray *array;
array = [NSMutableArray arrayWithCapacity:20];
//- (void) addObject: (id) anObject;
//NSMutableArray *array = [NSMutableArray arrayWithObjects:
@"One",@"Two",@"Three",nil];
[array addObject:@"Four"];
NSLog(@"array:%@",array);
//-(void) removeObjectAtIndex: (unsigned) index;
//NSMutableArray *array = [NSMutableArray arrayWithObjects:
@"One",@"Two",@"Three",nil];
[array removeObjectAtIndex:1];
NSLog(@"array:%@",array);
//- (NSEnumerator *)objectEnumerator;从前向后
//NSMutableArray *array = [NSMutableArray arrayWithObjects:
@"One",@"Two",@"Three",nil];
NSEnumerator *enumerator;
enumerator = [array objectEnumerator];
id thingie;
while (thingie = [enumerator nextObject]) {
NSLog(@"thingie:%@",thingie);
}
//- (NSEnumerator *)reverseObjectEnumerator;从后向前
//NSMutableArray *array = [NSMutableArray arrayWithObjects:
@"One",@"Two",@"Three",nil];
NSEnumerator *enumerator;
enumerator = [array reverseObjectEnumerator];
id object;
while (object = [enumerator nextObject]) {
NSLog(@"object:%@",object);
}
//快速枚举
//NSMutableArray *array = [NSMutableArray arrayWithObjects:
@"One",@"Two",@"Three",nil];
for(NSString *string in array)
{
NSLog(@"string:%@",string);
}
//- (id) initWithObjectsAndKeys;
//NSDictionary *dictionary = [[NSDictionary alloc]
initWithObjectsAndKeys:@"One",@"1",@"Two",@"2",@"Three",@"3",nil];
NSString *string = [dictionary objectForKey:@"One"];
NSLog(@"string:%@",string);
NSLog(@"dictionary:%@",dictionary);
[dictionary release];
//创建
NSMutableDictionary *dictionary = [NSMutableDictionary
dictionary];
//添加字典
[dictionary setObject:@"One" forKey:@"1"];
[dictionary setObject:@"Two" forKey:@"2"];
[dictionary setObject:@"Three" forKey:@"3"];
[dictionary setObject:@"Four" forKey:@"4"];
NSLog(@"dictionary:%@",dictionary);
//删除指定的字典
[dictionary removeObjectForKey:@"3"];
NSLog(@"dictionary:%@",dictionary);
//将NSRect放入NSArray中
NSMutableArray *array = [[NSMutableArray alloc] init];
NSValue *value;
CGRect rect = CGRectMake(0, 0, 320, 480);
value = [NSValue valueWithBytes:&rect
objCType:@encode(CGRect)];
[array addObject:value];
NSLog(@"array:%@",array);
//从Array中提取
value = [array objectAtIndex:0];
[value getValue:&rect];
NSLog(@"value:%@",value);
//NSFileManager *fileManager = [NSFileManager
defaultManager];
NSString *home;
home = @"../Users/";
NSDirectoryEnumerator *direnum;
direnum = [fileManager enumeratorAtPath: home];
NSMutableArray *files = [[NSMutableArray alloc] init];
//枚举
NSString *filename;
while (filename = [direnum nextObject]) {
if([[filename pathExtension] hasSuffix:@"jpg"]){
[files addObject:filename];
}
}
//快速枚举
//for(NSString *filename in direnum)
//{
//if([[filename pathExtension] isEqualToString:@"jpg"]){
//[files addObject:filename];
//}
//}
NSLog(@"files:%@",files);
//枚举
NSEnumerator *filenum;
filenum = [files objectEnumerator];
while (filename = [filenum nextObject]) {
NSLog(@"filename:%@",filename);
}
//快速枚举
//for(id object in files)
//{
//NSLog(@"object:%@",object);
//}
ios html数组,[转载]IOS中字符串与数组的处理相关推荐
- php 中的字符串转数组函数,php中字符串转数组的函数是什么
php中将字符串转换为数组的函数有:1.str_split()函数,语法"str_split(string,length)":2.explode()函数,可返回字符串数组:3.pr ...
- java字符串数组转json_java中字符串String格式转化成json格式
java字符串数组转json_java中字符串String格式转化成json格式 String s= Connection.deleteHost("10310");System.o ...
- ES6中字符串和数组新增的方法
ES6中字符串和数组新增的方法 一.字符串中新增的方法 1.模板字符串 (表达式.函数的调用.变量) 2.repeat(次数)函数 : 将目标字符串重复N次,返回一个新的字符串,不影响目标字符串 3. ...
- js中字符串与数组之间的转换
本文实例介绍了javascript中字符串和数组的相互转换方法,分享给大家供大家参考,具体内容如下 字符串和数组的相互转换操作是非常的重要的,因为在实际编码过程中会经常用到,所以这是必须要掌握的知识点 ...
- Object-c 中字符串与数组的处理
//一.NSString /*----------------创建字符串的方法----------------*/ //1.创建常量字符串. NSString *astring = @" ...
- 小程序中字符串转数组如何实现
JS 字符串转数组: var words =' likely, likely, likely,economic, economic'; //字符串中间已特殊符号隔开 var words = w ...
- java中字符串和数组如何比较_[Java教程]javascript中数组和字符串的方法比较
[Java教程]javascript中数组和字符串的方法比较 0 2016-07-19 23:00:05 ×目录[1]可索引 [2]转换 [3]拼接[4]创建[5]位置 前面的话 字符串和数组有很多的 ...
- java中字符串转数组,数组转字符串,集合转字符串
一.字符串转数组 这里使用的是split()方法. String ids = "1,2,3,4"; String[] idArray = ids.split(",&quo ...
- bash中字符串和数组的遍历
让我们看如下的bash script A="china fengxi zhongguo" echo "echo varialbe A directly:" $A ...
最新文章
- openStack调试
- 浏览器渲染原理及可能出现的bug
- MySQL学习(四)查询
- 08-GCD常用方法
- Oracle9i卸载后再次安装,设置的SID相同出现“指定的SID在本机上已经存在。请指定一个不同的SID。”...
- ReentrantLock可重入锁使用及原理
- 首次push本地代码到github上出现的问题及解决方案
- matlab图像处理 推荐,Matlab计算机视觉、图像处理工具箱推荐
- python网络编程知识_python六十七课——网络编程(基础知识了解)
- 概率论:集合、假设检验、分布、矩阵、估计
- 舞台音效控制软件_iSurround(电脑音效调节器) V1.0.0.1 官方版
- iText5官方系列教程-iText in Action(一)
- 毕业设计 嵌入式太空游戏机设计与实现
- 计算机设计大赛一人能报几个,我校在中国大学生计算机设计大赛获多个奖项
- 2019.02.28 bzoj4199: [Noi2015]品酒大会(sam+线段树)
- 尚德机构季报图解:净利1.79亿 实现连续四个季度盈利
- 【剑指Offer】整数(一)整数除法 - 两数相除 - JavaScript
- 用python绘制熊猫图案_python – 熊猫:如何在彼此之上绘制年度数据
- mysql表analyze,ANALYZE TABLE语句如何帮助维护MySQL表?
- 服务器安装内置无线网卡,笔记本怎么安装内置网卡 笔记本内置无线网卡安装步骤【图文】...