foxsofter

- (void)testFilter {
  RACSignal *signal = [@[ @1, @2, @3 ] rac_sequence].signal;
  signal = [signal filter:^BOOL(NSNumber *value) {
    return value.integerValue % 2;
  }];
  [signal subscribeNext:^(NSNumber *value) {
    NSLog(@"%@", value);
  }];
}