DDMathParser not working in Obj-C project using CocoaPods

Question

I have an Obj-C project with CocoaPods. Now I need to use DDMathParser, written in Swift. But can not import DDMathParser correctly. When I add new Swift file to the project, it works fine. DDMathParser is not working even in swift file I've created. Here's a bit of my code:

#import "ViewController.h"
#import "test-Swift.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    SwiftTest *test = [[SwiftTest alloc] init];
    [test run];

    NSLog(@"%@", [@"5 + 5" numberByEvaluatingString]);

}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

What I must do to make it work?

P.S. Bridging header created and working. In build settings "Defines Modules" set to YES

CocoaPods file:

pod 'AFNetworking'
pod 'DDMathParser'
use_frameworks!

Answer 1

pod 'DDMathParser'

This implies that you're using version 3.0 of DDMathParser, which was recently re-written in Swift, and in which the method numberByEvaluatingString does not exist. It was renamed to evaluate.