API needs to be objective C compatible

[imougy]

For example, the API in TradeItOrder

public func preview(onSuccess: @escaping (TradeItPreviewTradeResult, @escaping TradeItPlaceOrderHandlers) -> Void,
                       onFailure: @escaping (TradeItErrorResult) -> Void

Give this error while writing ObjC code:-

Also, for this API

[TradeItSDK configureWithApiKey:PUBLISHER_NAME environment:TradeItEmsProductionEnv];

Please make sure NOT to set a default value for the parameter, otherwise, I am getting this error:-

[imougy]

I think this is a wider problem, please make all the APIs work with Objective-C without issues.
Another example:-

Thanks,

[jsom]

I'm going to create an Obj-C ExampleApp this week which should address any of these quirks.

[jsom]

I have pushed a basic example app for Objective-C that covers the calls above. They were already compatible with Objective-C but you just need to add parameter names in the right place. See here:

https://github.com/tradingticket/TradeItIosTicketSDK2/blob/develop/ExampleAppObjC/ViewController.m

Make sure you import the Objective-C header as well to get access to the Environments:

#import <TradeItIosTicketSDK2/TradeItIosTicketSDK2.h>

I also pulled out a typedef for the PlaceOrder callback that should read cleaner.

[imougy]

My point was you add the parameter with your convention so others will just use xcode autofill and start working, without guessing what should I write there.

[imougy]

Cosmetic, not a big deal.
Low priority.
Fix if you have time or close.

[mitochondrion]

When you pass a block as an argument, you are defining the block so you will always have to name the parameters to your block. If you want XCode to add a placeholder when autocompleting block arguments, you'll need to file a Radar ticket with Apple: https://bugreport.apple.com.