Here I have a list of most frequently used other linker flags in iOS mentioned below.
​
-ObjC, -all_load, -force_load

1. What is the use of -ObjC linker flag ?
2.What is the use of -all_load ?
3. What is the use of -force_load ?

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You cannot just return something in Objective C  to Unity expect it to appear in Unity / C#. 
It's basically a two way communication.If you look at the asset store you can get several plugins to achieve this functionality.

In order to exchange message between Objective C and Unity,we need to follow the steps below.

What is Unity 3D ?
​Answer:
It is a  multiplatform game engine which gives outof-box functionality to developing best 2d and 3D  games as well as non-game interactive simulations and visualizations.

Apple introduced a grand addition in September 2017 event known as iPhone X or iPhone 10.
​
Let's highlight some some ultimate features.

 If you are planning to upgrading your phone, you are likely to be curious to know  how the new model will suit you best.

if we run a device with iOS version (10.3), which may not be supported by the version of Xcode(8.2.1).It shows an alert with warning "Could not find Developer Disk Image".

It clearly indicates that you must have to update your Xcode (8.2.1) to Xcode(8.3).It's really hectic way to download such a heavy file within a short period of time and meet your project deadline. 

Remote notification or push notifications play a vital role in mobile apps to inform users about some new content or updates.

They are used to promote your mobile apps and to increase user retention .

Here is the big challenge for the developers to grant a requested permission from the app user, should the user allow or disallow notifications.

2017 is the year of billions of smartphone users.Now the major problem with app developers are they are techies and not a marketer. As a developer,it’s very tough to understand your audience’s behaviour and the secrets of App Marketing.
​
You’ve developed a nice app, and now it’s already live in the App Store.The you need to think: How can you make people easy to discover it ?

when we have our NSDate object and we can compare it to another NSDate and get an NSTimeInterval which is the difference in seconds.
​I think we can use  a category to evaluate some results.
In order to compare two dates please follow the below steps:

Local notifications are best way to retain user in your game or app.It gives  alert to users via app that might not be running.
Local notifications can be scheduled at the time when user's app is running in foreground or background.You just need to schedule notification to be triggered at a specific time, It's the system who manages to deliver it at appropriate time.

You must have observed that since iOS 11, the App's "App Icon" asset in the catalog requires a 1024x1024 sized icon to submit your app to the App Store review.
​
If we look into the apple's guideline for metadata of a particular app,1024x1024 icon was mandatory to upload in iTunesConnect app page.
​ 
Can we get that icon from iTunes app page?

Step1:
Pair a wireless device with Xcode (iOS)
First of all, you need to pair your device with Xcode in order to launch your app on a wireless device.
The required configurations for debugging your app on network device are (Xcode 9.0 or later running on macOS 10.12.4 or later, and on the device, requires iOS 11.0 or later, or tvOS 11.0 or later)

Xcode 9 is surprisingly a fast and very much smooth while working  even with the bigger files.

​It also understands your code better than ever, so you can select and edit the structure or even transform the selection directly in the editor.

Let's dive into some best features of Xcode 9 below

In this article I have mentioned some most frequent issues that we face while developing apps using Xcode in iOS platform and the tips -how to fix errors related to Xcode.
I must continue adding some more issues and in future to help the beginners

UIScrollView is one of the most important and useful controls in iOS. It is the basis for the very popular UITableView and is a great way to present content larger than a single screen.

You must set the contentSize property to the size of the scrollable content. This specifies the size of the scrollable area

In order to be a best developer your first step should be to lean code.Let’s point out some very good characteristics to be a best developer.
1.Analytical thinking:
To be a best developer you should have good analytical skills on system-level.

1.Explain some features included in iOS 9 

​Answer:

Siri and Intelligent Search:

Siri is a helpful assistant you can talk to, but it is also the nice technology that powers search on your iOS devices (iPhone ,iPad).

1.What is the use of store kit framework?
​
Answer:

The Store Kit framework provides classes that allow an app to request payment from a user for additional functionality or content that your application provides.

The NSURLConnection class provides convenience class methods to load URL requests both asynchronously using a callback block and synchronously.

You can use NSURLConnection class in two ways.

1.Synchronous
​2.Asynchronous

1.What is iBeacon or iBeacons?
Answer:

An iBeacon is a low cost, low-energy bluetooth device which emits a signal broadcasting a unique ID within short distances.
​
​iBeacon and Beacon are almost used interchangeably.

​Define @property, @synthesize, @implementation, @interface in iOS.

Answer:
@property:
@property is a policy to define getter- and setter-methods, or as we call them accessors in Objective-C. 
Suppose you are declaring a NSInteger variable in Objective c like

1.What are the benefits of Application sandboxing ?
Answer:
The sandbox creates and builds a exclusive environment of data and information for each and every app.

​The sanbox can reduce the potential harms that can be caused by a potential hackers to an iOS device but it can't prevent the attack from happening

My objective in this article  to explore some points regarding best coding practices in iOS projects to make it robust,scalable and easy for maintenance.
​
As an iOS developer,you guys are recommended to follow some good coding style first of all.

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1.How we declare variables in Swift ?
 Answer:

Before using constants and variables,we must declare them .

Declare constants with the 'let' keyword and variables with the 'var' keyword.