NSArray componentsJoinedByString
Constructs and returns an NSString object that is the result of interposing a given separator between the elements of the array.
- (NSString *)componentsJoinedByString:(NSString *)separator
Parameters
separator
The string to interpose between the elements of the array.
Return Value
An NSString object that is the result of interposing separator between the elements of the array. If the array has no elements, returns an NSString object representing an empty string.
Discussion of [NSArray componentsJoinedByString]
For example, this code excerpt writes "here be dragons" to the console:
NSArray *pathArray = [NSArray arrayWithObjects:@"here", @"be", @"dragons", nil];
NSLog(@"%@",[pathArray componentsJoinedByString:@" "]);
Special Considerations
Each element in the array must handle description.
NSArray componentsJoinedByString example.
NSArray a = [NSArray arrayWithObjects:@"1", @"2", @"3", nil];
NSString b = [a componentsJoinedByString:@","];
NSLog(b); // Will output 1,2,3
NSString b = [a componentsJoinedByString:@","];
NSLog(b); // Will output 1,2,3
Example of [NSArray componentsJoinedByString].
string = [string stringByAppendingString:[food componentsJoinedByString:@", "]];
is the same as
NSString *tmpString = [food componentsJoinedByString:@", "];
string = [string stringByAppendingString:tmpString];
is the same as
NSString *tmpString = [food componentsJoinedByString:@", "];
string = [string stringByAppendingString:tmpString];
NSArray componentsJoinedByString example.
- (NSMutableArray *) getArrayOfCommaSeparatedSelectorStrings
{
NSMutableArray *array = [[NSMutableArray alloc] init];
for (NSMutableArray *e in [self getArrayOfSelectorArrays])
[array addObject:[e componentsJoinedByString:@", "]];
return array;
}
{
NSMutableArray *array = [[NSMutableArray alloc] init];
for (NSMutableArray *e in [self getArrayOfSelectorArrays])
[array addObject:[e componentsJoinedByString:@", "]];
return array;
}
