oc6

来源：互联网发布：javascript 书编辑：程序博客网时间：2024/05/17 08:54

//NSString    NSString *str1=@"hello world";    NSRange range=[str1 rangeOfString:@"h"];    NSRange range1=NSMakeRange(0, 4);    NSString *str2 = [str1 substringWithRange:range1];NSLog(@"%zi,%zi,%@", range.length, range.location, str2);//1,0,hell

//CGPoint,CGSize,CGRect    CGPoint p1 = NSMakePoint(115, 10);    NSPoint p2 = CGPointMake(20, 20);    NSString *str1 = NSStringFromPoint(p1);    CGSize s1 = CGSizeMake(10, 20);    NSSize s2 = NSMakeSize(20, 13);    CGRect c1 = NSMakeRect(p1.x, p1.y, s1.width, s1.height);    CGRect c2 = {p1, s1};    CGPointZero; //原点    bool x = CGPointEqualToPoint(p1, p2);    bool x2 = CGRectContainsPoint(c1, CGPointZero);    NSLog(@"x=%g,y=%g,w=%g,h=%g",c1.origin.x, c1.origin.y, c1.size.width, c1.size.height);NSLog(@"%@,%i",str1, x2);

 //NSArray 快速添加；    NSArray *arr1 = @[@"jj", @"dadj"];for (id a in arr1) {     NSUIntegerI = arr1[indexOfObejct:a;        NSLog(@"%@",a);//每遍历到一个元素，就会调用一次block。    [arr1 enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {        NSLog(@"%@",obj);    }];  //*stop=YES； ==break

//求代码行数NSUInteger codeFileLineCount(NSString *path) {        NSFileManager *mag = [NSFileManager defaultManager];   //文件管理权限        BOOL dir = NO;//标记是否为文件夹        int count = 0;    BOOL exist = [mag fileExistsAtPath:path isDirectory:&dir];   //是否存在        if (!exist)        return 0;        NSString *extension = [path pathExtension]; //扩展名        if (dir) {        NSArray *array = [mag contentsOfDirectoryAtPath:path error:nil];                for(NSString *filename in array) {//            codeFileLineCount([[path stringByAppendingString:@"/"] stringByAppendingString:filename])//递归            count +=codeFileLineCount([NSString stringWithFormat:@"%@/%@",path,filename]);        }        return count;    }        else {//判断拓展名        if (![extension isEqualTo:@"c"]            &&![extension isEqualTo:@"m"]            &&![extension isEqualTo:@"h"]) {            return 0;        }        NSString *content = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];                NSArray *array = [content componentsSeparatedByString:@"\n"];                NSRange range = [path rangeOfString:@"/Users/pc/Documents/Ios_start_Xcode"];                NSString *newPath = [path stringByReplacingCharactersInRange:range withString:@""];                NSLog(@"%@的行数%zi",newPath,array.count);                return array.count;    }}

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