我聽的最多的話就是“這個我就不說了”!我以前遇到的老師,還沒見過一直把這句話掛在嘴邊的!難得沒人覺得講得極其不完整嗎?老師們的時間真是趕啊,一套視頻一個多小時,這也不說那也不說,呵呵!
2015-12-08
最新回答 / 無謂艱苦
#import <Foundation/Foundation.h>#import "PeopleAll.h"int main(int argc, const char * argv[]) {? ? @autoreleasepool {? ? ? ? PeopleAll *people1 = [[PeopleAll alloc] init];? ? ? ? PeopleAll *people2 = [[PeopleAll alloc] init];? ? ? ? PeopleAll *peopl...
2015-12-03
//字符串指定范圍替換
NSString *str14 = [str13 stringByReplacingCharactersInRange:NSMakeRange(0, 2) withString:@"dan"];
NSLog(@"str14 = %@" , str14);
NSString *str14 = [str13 stringByReplacingCharactersInRange:NSMakeRange(0, 2) withString:@"dan"];
NSLog(@"str14 = %@" , str14);
2015-11-07
判斷字符串是否相同
[str isEqualToString]
比較字符串
NSComparisonResult
按指定字符分割字符串
[str componentsSeparatedByString]
按照范圍截取字符串
NSMakeRange
1.從某一位開始
[str substringFromIndex]
2.從開頭
[str substringToIndex]
拆分字符串
for
[str characterAtIndex]
查找指定字符串位置
[str rangeOfString]
替換
[str stringByReplacingCharactersInRange]
[str isEqualToString]
比較字符串
NSComparisonResult
按指定字符分割字符串
[str componentsSeparatedByString]
按照范圍截取字符串
NSMakeRange
1.從某一位開始
[str substringFromIndex]
2.從開頭
[str substringToIndex]
拆分字符串
for
[str characterAtIndex]
查找指定字符串位置
[str rangeOfString]
替換
[str stringByReplacingCharactersInRange]
2015-10-28
字符串類型轉(zhuǎn)換
1.c->oc : [NSString stringWithUTF8String]
2.oc->c : [str UTF8String]
格式化字符串
[NSString stringWithFormat]
拼接字符串
[str stringByAppendingString]
大小寫轉(zhuǎn)換
1.[str lowercaseString]
2.[str UppercaseString]
判斷前后綴
1.[str hasPrefix]
2.[str hasSuffix]
1.c->oc : [NSString stringWithUTF8String]
2.oc->c : [str UTF8String]
格式化字符串
[NSString stringWithFormat]
拼接字符串
[str stringByAppendingString]
大小寫轉(zhuǎn)換
1.[str lowercaseString]
2.[str UppercaseString]
判斷前后綴
1.[str hasPrefix]
2.[str hasSuffix]
2015-10-28