Swift 4 – A Step Ahead to The Most Advanced Programming Language – iOS Development

Hey, welcome back!!! Let’s move one step ahead with the open source development language from Swift 3 to Swift 4. We, at 9series, have filtered out points of our next strides in developing mobile apps using Swift 4.

Swift 4

Swift 4 is the latest major release for iOS App Developer that is intended to be completed in the fall of 2017. Its main focus is to provide source compatibility with Swift 3 code while implementing essential feature work that needs to achieve binary stability in the language. It will contain valuable enhancements to the core language and Standard Library, particularly in the generics system and an overhaul of the String type.

Source Compatibility Modes

The Swift 4 compiler will provide two language modes: Swift version 3 and Swift version 4. Swift 3 established the language for source-level stability and now Swift 4 releases source compatibility as a feature moving ahead.

    • Swift 3 mode is default for existing code and will build source code that works with the Swift 3 compiler
    • Swift 4 mode allows you to use new features and performance optimizations of Swift 4, some of which may require migration
    • Mixed mode allows you to take advantage of interoperability between binaries built with the same compiler. The proposed design is that a project containing various Swift modules, such as a Xcode project with multiple Swift targets, will be able to ratify into the specific Swift language mode on per module (target) level and that they can smoothly interact within the same compiled binary.

New Features in Swift 4

    • Swift 4 presents another codable protocol that gives a chance to serialize and deserialize custom data types without composing any special code – and without worrying about losing your value types
    • Quicker and simpler to use strings that retain Unicode correctness and add support for using, creating and managing substrings
    • Smart key paths for type-safe, effective and extensible key value coding for Swift types
    • Enhancements to create and manipulate Dictionary and Set types

Swift has many other features to make your code more expressive:

Multi-Line String Literals

To start a string literal, you need to write three double quotation marks: “”” then press return. After pressing return key, start writing strings with any variables, line breaks and double quotes. To end multi line string literal again write ””” in new line. Ex:-

1

Strings are Collections

Just like in earlier version of Swift, Strings can be handled as a collection. No need to writestring.characters.something to perform string manipulation.

2

Dictionary Functionality has Improved

Swift 4 combines some additional functionality to dictionaries to make them more strong, and also to make them work more like you would expect. Let’s start with a simple example: Modifying dictionaries in Swift 3 does not return a new dictionary. Instead, it returns an array of tuples with key/value labels.

3

After that code runs you can’t read distinction[“Maths”] because it is no longer a dictionary. Instead, you need to use distinction[0].value, which is not good for us because we apply filter on dictionary and we got an array.

As of Swift 4, this acts more like you would expect: you get back a latest dictionary. Obviously this will break any existing code that relies on the array return type.

Similarly, the map() method on dictionaries got a key-value tuple passed in, and could return a single value to be added to an array.

4

That has not changed in Swift 4, but there is a new method called mapValues(). It allows you to modify the values and place them back into a dictionary using the original keys.

Here we try to form different buckets where each bucket will contain values having same first character in their name. For Example:-.

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It’s now likely to obtain a dictionary key and provide a default value to use if the key is missing. In following statement if there is no value for key “Bio” found then it will print default value.

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Built in Encoding and Decoding

Swift 4 appears with built-in encoders and decoders for JSON. JSON to Model conversion comes in built in.

7

One Sided Range

Swift 4 introduces Python-like one-sided collection slicing, where the missing side is automatically assumed to be the start or end of the collection.

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Conclusion

Like with other Swift releases, 4.0 was announced at WWDC ’17 and released in beta form for developers alongside Xcode 9. This release of Swift added quite a few refinements and features to the programming language. First release of Swift 4.0 will bring overall stability to the source and binary interface, or ABI.

MongoDB Developers Boilerplate Overview

The entire software development industry has seen a radical turn in the past decade. As businesses move online, the demand for responsive web applications has reached a new herald. To meet this need, we at 9series constantly strive and learn and keep ourselves abreast with latest industry developments to deliver the best to our customers.

Database is a vital angle to creating proficient web applications. Customary methods for database improvement and administration don’t toll achievement in today’s dynamic advanced environment. A crisp approach is required.Best MongoDB Developers in India precisely conveys this esteem to the table. we give master MongoDB advancement administrations to our clients.
mongodb-developers-boilerplate-overview

What is MongoDB?

MongoDB is an open source database system. Developed and supported by 10gen, it is the most popular NoSQL database management system. MongoDB is document oriented, based on NoSQL and supports document management, modification, and real-time processing and analysis on a large scale basis. Today, MongoDB is used by well-known brands like eBay, MetLife, Telefónica, Foursquare, MTV Networks and the UK Government.

Where it works?

MongoDB is the go-to solution for platforms where large volumes of data are required to process high performance. MongoDB is good at handling complex and heterogeneous data to model in a relational schema and perform real-time analytics.

MongoDB is particularly well suited for the following:

  • Big Data Analytics, High Traffic Apps
  • Social Network Applications
  • Event Logging Application
  • Content Management Systems
  • E-Commerce Applications
  • Gaming Applications
  • Real-time Analytics
  • High Volume Problems
  • Document Management Systems
  • Mobile Applications
  • Website Operational Data Store
  • Document Oriented Systems

Salient features of MongoDB

  • Scalable: MongoDB presents a scalable platform by enabling addition of replicas which in turn adds read capacity. It also supports management of database as it expands with content and visitors.
  • Consistent across platforms: MongoDB code is centralised and hence, provides a consistent experience across platforms.
  • Easy to search: With MongoDB query language and indexing support, users can perform search, sort, and filtering functions from diverse formats of content easily
  • Fast Performance and Update: MongoDB powers addition of user created content, tags, and comments to the database immediately in a matter of minutes

Travel & Hospitality Business: “Growing Digital”

Travel-Hospitality-Business

Those days have been passed when luxury travel was a privilege reserved to the well-heeled. Today’s customers have access to all these services, thanks to disruptive low-cost airlines and mobile booking sites. Travel agents and agencies are racing to enhance the consumer experience, cover more market and customer loyalty. Here we are going to provide you some highlights of Travel & Hospitality Industry in the current scenario.

Customers’ demand, they are “a-changin”. Such an enormous growth has changed the face of Travel and Hospitality industry. As money is flowing from east to west, as middle class continues its surge, and as the Optimistic generation – which within 10 years will be in its peak earning, spending and travel years – demands faster, personalised services, many service providers have moved toward a model that caters to these changing demographics.

Demand & Supply

Travel and Hospitality industry contributes 9% of global GDP, at the same time industry is the largest employer in the world, provides employment to one in 11. However, as large as the industry is, it has the potential to be a lot bigger. Within the decade, it is anticipated that this industry will create an additional 75 million jobs. Look at the numbers and you’ll see why: the travelers population has doubled in the past 20 years and is expected to be twice again over the next 20.

Technological Innovation: A trend setter

Technical advancement is no more astonishing to the world, in every two second a new technology is being introduced to the world. Where do you stand? As mentioned above, “ Travel and hospitality” industry is making up large portion in global economy. Are you catching up hold on your customers? Your potential customers are planning trips and vacations online rather than calling up to hotels’ reservation desk and booking an accommodation for a trip. Being into travel & hospitality business it is substantial to know what is happening in global market, and what you customers are demanding. Here is some statistics…

Travelers are planning vacations online

Ringing up the hotel reservation desk for booking is no more in trend now. Most of the travelers will prefer instant booking with the smartphones, tablets or through desktops. According to the data gathered from Travel Weekly, tablets, smartphone and computer ownership is surging among people who regularly book travel over the internet and a recent PhoCusWright study suggested that the flow is crafting a growing user base that expects suppliers (and online travel agencies (OTAs) ) to boost both their mobile websites and interact with a comprehensive selection of travel application.

What global travel & hospitality industry states

The travel and hospitality industry is one of the world’s largest industries with a global economic contribution (direct, indirect and persuaded) of nearly Seven Trillion U.S. dollars in 2013. The direct economic influence of the industry, comprising accommodation, transportation, entertainment and attractions, was nearly 2.2 trillion U.S. dollars that year. A number of nations, such as France and the United States, are consistently popular tourism destinations, but other, less well-known countries are swiftly emerging in order to reap the economic benefits of the industry.

Worldwide, the travel & hospitality industry has experienced sound growth almost every year. Global tourist arrivals increased from 528 million back in 2005 to 1.09 billion in 2013. Statistics were anticipated to exceed 1.8 billion by 2030. Each year, Europe obtains the most international tourist arrivals. It also produces the most travelers: with just fewer than 566 million outbound visitors in 2013, the country had more than double that of the second-largest tourist origin, the Asia Pacific region.

In 2013, Global Tourism Revenue touched approximately 1.16 trillion U.S. dollars, having nearly doubled since 2005. That year, China had the largest global tourism spending, followed by the United States and Germany. The leading city in global traveler expenditure was London, where visitors spent more than 19 billion U.S. dollars in 2014.

Technological advancement is pushing the usages of latest Travel & Hospitality technologies such as CRM, ERP, Booking Engines, Mobile Applications, Beacons, IoT, BigData and enterprise industry software. Today, leading travel and hospitality players are focusing & investing more and more on their online presence. If you are into travel & hospitality business, this is the right time start growing digital to get hold on mobile travelers. Choosing a right travel and hospitality technology services & solutions can lead you a way ahead than your competitors. Click here to get in touch with us.