Books on Swift programming

Books on Swift programming

What is X-code?


X-code is a software development toolset which used to develop all the applications in Apple productions, for example, the Mac ,IOS, I-watch and for the other  I-products. And this is one of the most popular pro apps on apple production platform.  This was firstly released in 2003 and this tool set is written in C , C++ ,object C etc .x code is a freeware and it comes with open source components.  The latest version of the x code was downloaded fourteen million times.  The latest version was special because the central of the development was the programming language which was used to write the x code. And it was introduced in 2014 .  the newest version of X code was written in swift programming language.

What is swift programming?

Swift programming is a newly released programming language introduced by the Apple inc. It first appeared in 2014. This programming language a multi-paradigm licensed language which is mainly used to develop and write software in apple productions. Swift is fast, modern and it is designed for safety and it also has a remarkable level of interactive which other platforms has never been used. It is faster than objective C. and the RC4 encryption level is utterly high compared to objective C.  Also swift has modern features like multiple return types, generics, namespace etc. swift programming has reduced the content and easily understandable way to write the code. Swift can be used to develop a simple social media app to the range of a high-performance 3D gaming app.
Swift is completely native to Cocoa and Cocoa touch software frameworks. And it is built with the same LLVM compiler. And also the same optimizer and the autovectorizer which objective C use.  And it also has the same ARC memory management model and the same runtime too.  This is why swift programming can fit right alongside with the objective C and the C code in the same application. The “playground” is the feature which is used to increase the dynamism level of interactive inside the platform.

Why is Swift programming needed to learn?

If you`re willing to become a software developer it is highly recognizable if you go learn swift programming. Because more than objective C , swift programming has been included high features and a much easier way to develop. And also if you’re willing to be a  I-application developer more than objective C , Swift programming is needed. And if you`re already a software developer learning the newest language will increase your wide range of developing. And you do not need to spend more time and resources to learn swift. It is easily understood and if you’re already proficient in objective C you are already capable of developing using swift.
Swift is a newly introduced programming language which turned the software developing field to look into another side and which made a new era of development.

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Complete Beginners Guide to iOS Development – Build 10 Apps
Swift Programming – Mastering TableView for Mac OSX Apps
Learn programming in Swift Step by Step
The Ultimate Swift Programming Tutorial
Swift Programming – Complex Cell TableView for Mac OSX Apps
Learn Swift Programming From Scratch – No MAC Required

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Best books on Cryptography

Best books on Cryptography

What is encryption?

Encryption is a way of securing the communication we use in our day to day lives. This method will protect the privacy and the security of the message and the message will transfer only to the relevant party. It will prevent the message from going to unauthorized parties as well as being hacking. Encryption simply can define as converting the plain text message into a random and meaningless text which only can be understood by decrypting it. Decryption is the reverse form of encryption. This is described as the meaningless random text is converted into the plaintext message again in order to understand.
There are number of examples of encryption we use in our daily routine. If you use cable TV which brings the content to your place some of those channels are encrypted because it provides the service only for the people who pays for the channel.  And your password is also encrypted which you use to log into your email or social network. If you use a Zip file with a password that is again using encryption.

Why do we use encryption?

Encryption is mainly used to focus on three special aspects. First is to assure the privacy of our communication. Even if it is a simple message you send to your friend you don’t want some other to pretend that he is your friend and takes the message and spread it as a false message.  In this case, encryption is the method. And the second is to assure the privacy of storage. If you have files you want to be kept secret. You will definably have to protect it using a password. This is also a special scenario which encryption is being used. The third aspect is to assure the forward secrecy. In the past, the encryption is used in on-time data privacy. But in the modern world the privacy and the security of the message is should also be protected in the future. In this scenario, encryption is used in a high manner. Forward secrecy means no matter what happened in the future the encrypted message will remain safe.

How does encryption works?

Encryption is converting the normal text into a text that cannot be read. So to do this conversion simply the text is sent through an algorithm. And there is a key which we used to encrypt and the relevant party should have the same key to unlock and read the message. This key is the access method for the algorithm. Without the key, it remains locked. The result of the plain text after being processed by the algorithm is called the “Cyphertext”. This cipher text has been identified thousands of years ago to send secret messages.  The method of implementing the text has only been developed in the modern world.
There are various ways which are being used to encrypt your details and messages. And also different fields and companies use different techniques for encryption.  Military and government use a very high complex algorithm for encryption. Our email messages sent to a friend is also being encrypted in a simpler manner but it is also a very secure method.
Encryption is a very useful method to secure and assures our privacy in the data communication of our day to day lives.

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Introduction to Encryption – Terminology and Technology
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Best book for operating system

Best book for operating system

What is an Operating system?

Simply it is the chief program which manages both software and hardware and acts as the connector of both resources. It has control of every process, file, all the sections of memory and device. It is also the interface between the user and the computer. Windows, Mac OS are some popular examples for paid Operating systems as well as Linux, Ubuntu is well known free operating systems. Also Android and IOS are the most populated operating systems used for smartphones. There are four essential managers of every operating system. They all work together as a team to make the job completed. Memory manager ,process manager, file manager and device manager are the four essentials. The memory manager is in charge of the main memory. It will allocate , reallocate and collect garbage of memory. The process manager decides how to allocate the central processing unit of the computer . and also it keeps track of each process and decides their states too. Device manager monitors every device and keeps track. It also makes the connection efficient with the hardware resources with the computer. File manager checks every type of file and keeps track on them which includes data files ,text files, executables files compilation files etc.

Services of the OS

Basically, OS is a layer of software which provides a great service to the computer system. Simply those services can be divided into two categories.  Abstraction and arbitration.
Abstraction means hiding the details of hardware configurations so that the each application does not have to be tailored for the devices which it connects and has to possibility to connect. And also it provides the interface and the connection of  the hardware devices manufactures by different users.  So that the capability will be increased.   Arbitration means the operating system simply manages the access to share the hardware components so that the multiple applications can run on the same hardware resources at the same time without interfering one another . The hardware resources include the central processing unit, the main memory, all the input-output devices and the power supply system.
Supporting any type of processor is an example for abstraction. Switching between applications can be defined as arbitration. Separating memory which was allocated for different applications is also arbitration.

What is the kernel of the OS?

More than the outside appearance of the operating system we see there are lot more functions and activities running inside. Kernel is the core of the operating system. Every multi-tasking computer uses this kernel in order to be a fully functional and efficient computer. Darwin kernel is mostly used in computer OS and Linux kernel is used in Android. Kernels can also be a proprietary and open source.
Kernel is the main manager of all the above-mentioned services and managements. All the signals, instructions, and services are managed and should pass through the kernel. This is the lowest layer which is above the CPU. Kernel also provides the necessary device drivers according to the detected resources. Also without the kernel the operating system will not be functioned efficiently and accurately.
So the operating system holds the main interconnection between the machine and the user. which does a greater job underneath the machine we see from the outside.

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Operating System Concepts

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Books on web hosting

best books on Web Hosting

Hosting Service

A web hosting service is used to access websites via world wide web.

To make your website visible on the world wide web your site files and data must be physically stored on a computer that is connected to the internet. These large high power computers called web servers. Web hosting service companies physically have more than one servers in one location and it called data center.  In addition, website host provides the security, software, bandwidth and support to connect your website to the internet.

Imagine web hosting company is a shopping complex that contains several individual stores. If you want to open a store in the shopping center you can leave space and set up a shop. Just like shopping center web hosting companies allow you to leave space in their web servers. Where you can store your files and make them available for visitors to view on the internet.

There Three types of hosting

  1. Shared hosting
  2. VPS hosting (Virtual Private Servers)
  3. Dedicated hosting

Shared hosting

In a Shared hosting solution, your hosting account is one of many accounts on the server or group of servers that maintain by hosting provider. If you new to hosting and watching your budget shared hosting might be a good place to start.

Few things to consider when determining a shared hosting is a right choice for you.

Daily traffic to a small business website doesn’t exceed 2000 visitors. This means small business website typically don’t require a lot of bandwidth or resource to support them. In addition, newer small business website tends to be more simple and straightforward with fewer files and data. Which in term means they often do not require a lot of severing space and the resources. By sharing a hosting with others   Shared hosting solutions allow you to get your small business website power and space it needs and much lower cost than a dedicated solution.

VPS hosting (Virtual Private Servers)

It is like a townhouse. It is bigger and gives you more control than your shared account. With VPS you have control with everything inside your walls. But you share the property. You can also install whatever programs that you want. It is more ductile than the shared hosting.

Dedicated hosting

A dedicated server is like having your own home in which the client leases. An entire server that is not shared with anyone else. Dedicated hosting is a hosting configuration in which a server is devoted to a single organization or for a single purpose. This is in contrast to shared hosting, in which a server acts as a host to multiple clients.

see also about operating system

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Web Hosting for Beginners
A Beginners Guide To Registering A Domain Name & Web Hosting
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Host Your Own Web Development Lab from Home!

 

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Best books on cloud computing

Best books on cloud computing

What is cloud computing

To meet every changing business and organizations, need to invest time and budget to scale up their IT infrastructure. Like hardware, software and services. However, with on premises, IT infrastructure scaling can be slow. And organizations are unable to achieve optimal utilization of the IT infrastructure. Cloud computing is a paradigm shift that provides computing over the internet. A cloud computing servers consist of highly optimizing virtual data centers. They provide software, hardware and information resources for use or needed. Organization can simply connect to the cloud and use the available resources on a pay per use basses. This helps companies to avoid capital expenses on extra on-premises infrastructure resources. And instantly scale up or scale down according to business requirements. You can deploy cloud computing service by using three different models.

  1.    Private cloud.
  2.    Public cloud.
  3.   Hybrid cloud.

Private cloud function solely for one organization on a private network. And it’s highly secured. A public cloud owned by the service provider. And offers the highest level of efficiency in shared resources. A hybrid cloud is the combination of private and public development models. In a hybrid, cloud-specific resources are run or used in a public cloud and others are used on premises in a private cloud. This provides increased efficiency. Cloud computing consists of following service models.

Service Models

  1. Infrastructure as a service(IaaS).
  2. Platform as a service(PaaS).
  3. Software as a service(SaaS).

By using the Iaas model organizations get infrastructure component. Such as computing power, storage capacity. Here the organization has control over the whole IT infrastructure. Including the hosting environment and the applications. However, the organization needs to partition additional staff to maintain and manage the infrastructure and the application. Microsoft had proposed remote desktops and virtual machines to Microsoft windows Azure as and Iaas offering. The Paas model provides an organization with the platform or a runtime environment to create and deploy applications. Here the organization is only accounted for the development, maintenance and management of the applications. Microsoft offers the Windows Azure platform as a Paas offering. The Saas model provides organizations with ready to use application then use a combination of cloud-based computing and storage services. Microsoft provides various online services. Such as Microsoft Business Productivity Online Standard Suite and Microsoft Dynamics CRM Online as a SaaS offering. To understand how cloud computing can help an organization extended IT capabilities consider wide world importers. A company that manufactures beauty products. The research department has to store and process a large amount of data. Thus, the company is looking for a cost-effective compute and storage solution. Additionally, wide world importers have a group of scientist situated at different geographical locations. The geographical barrier affects research requiring a better collaboration solution. And addition the company is planning to develop a cost-effective data-mining application to collect visiting data during its week-long worldwide annual beauty pageant. Cloud computing provides wide world importers with an efficient and effective response to their problems. Wide world importers can subscribe for additional compute and storage services offering by Windows Azure on a pay per use spaces to move all of its statistical data analysis and storage to Windows Azure. By doing so they can tie-up more on research. Wide world importers can use BPOS Microsoft Office Live Meeting and Microsoft Share Point Online for efficient collaboration for design, development, and testing of the data mining application. The company can use the Windows Azure platform to incline on software evaluation and reduce the time and cost required for adjustment of the development and testing environment.

see also what is the web hosting

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Cloud Computing Basics: Enhance your career as Cloud Engineer
Cloud Computing Development Essentials
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Fundamentals of Cloud Computing
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