Objective-C Simplest way to create comma separated string from an array of objects

Solution 1:

Use the NSArray instance method componentsJoinedByString:.

In Objective-C:

- (NSString *)componentsJoinedByString:(NSString *)separator

In Swift:

func componentsJoinedByString(separator: String) -> String

Example:

In Objective-C:

NSString *joinedComponents = [array componentsJoinedByString:@","];

In Swift:

let joinedComponents = array.joined(seperator: ",")

If you're searching for the same solution in Swift, you can use this:

var array:Array<String> = ["string1", "string2", "string3"]
var commaSeperatedString = ", ".join(array) // Results in string1, string2, string3

To make sure your array doesn't contains nil values, you can use a filter:

array = array.filter { (stringValue) -> Bool in
    return stringValue != nil && stringValue != ""
}