Second NSLog message will not print

出於某種原因，我無法將第二條NSLog消息輸出到控制檯。已經找到了問題，但找不到它。提前致謝。Second NSLog message will not print

#import <Foundation/Foundation.h> 

int main(int argc, const char * argv[]) 
{ 

    @autoreleasepool { 

    // Create the array of strings to devowelize and a container for new ones 
    NSArray *oldStrings = [NSArray arrayWithObjects:@"Sauerkraut", @"Raygun", @"Big Nerd Ranch", @"Mississippi", nil]; 
    NSLog(@"old strings: %@", oldStrings); 
    NSMutableArray *newStrings = [NSMutableArray array]; 

    // Create a list of characters that we'll remove from the string 
    NSArray *vowels = [NSArray arrayWithObjects:@"a", @"e", @"i", @"o", @"u", nil]; 

    // Declare the block variable 
    void(^devowelizer)(id, NSUInteger, BOOL *); 

    // Assign a block to the variable 
    devowelizer = ^(id string, NSUInteger i, BOOL *stop) 
    { 
     NSMutableString *newString = [NSMutableString stringWithString:string]; 
     // Iterate over the array of vowels, replacing occurences of each with 
     // an empty string 
     for (NSString *s in vowels) { 
     NSRange fullRange = NSMakeRange(0, [newString length]); 
          [newString replaceOccurrencesOfString:s 
                 withString:@"" 
                  options:NSCaseInsensitiveSearch 
                  range:fullRange]; 
          [newStrings addObject:newString]; 
          }; //End of block assignment 

     // Iterate over the array with our block 
     [oldStrings enumerateObjectsUsingBlock:devowelizer]; 
     NSLog(@"new strings: %@", newStrings); 

    }; 
    return 0; 
} 
}

來源

2012-07-14 pdenlinger