Equivalent for “stringByDeletingPathExtension ” for an array

问题

I want to run stringByDeletingPathExtension for all NSString members of an NSArray. How can I do this in Objective-C?

回答1:

NSArray *myArray = ... ;

[myArray makeObjectsPerformSelector:@selector(stringByDeletingPathExtension)]; 

EDIT: As @Wevah pointed out in the comments, this solution does not solve the problem, since stringByDeletingPathExtension returns a string rather than modified the object on which is invoked.

NSMutableArray *newArray = [[[NSMutableArray alloc] initWithArray:myArray] autorelease];
for( int i = 0; i < [newArray count]; i++ ) {
   NSString* oneItem = [newArray objectAtIndex:i];
   [newArray replaceObjectAtIndex:i withObject:[oneItem stringByDeletingPathExtension]]; 
}

then use your newArray ...

来源：https://stackoverflow.com/questions/5015050/equivalent-for-stringbydeletingpathextension-for-an-array