Introducing C# 9: Native-sized integers

Introduction

First what are native-sized integers ? They are designed to be a integer whose size is specific to the platform. In other words, an instance of this type must be 32 bits on 32-bit and 64-bit hardware and operating systems on 64-bit hardware and operating systems.

The CLR / JIT / MSIL supports the definition and usage of native integers / unsigned integers. Since .NET 4.0’s CLR, it is possible to add / substract an integer from a System.IntPtr / System.UIntPtr, and it is possible to do == / != comparisons with other System.IntPtr / System.UIntPtr, but any other comparison operation is prohibited…, i.e. they cannot be compared with >, >= etc. to each other, so System.IntPtr/ System.UIntPtr remain very basic in the amount of pointer arithmetic.

C## 9 brings what mono has brought before: language support for a native-sized signed and unsigned integer types with nintand nuint keyword. The motivation here is for interop scenarios and for low-level libraries, so might not use them often.

Types nint and nuint are represented by the underlying types System.IntPtr and System.UIntPtr with compiler surfacing additional conversions and operations for those types as native ints.

Sources: Microsoft and Github

C## 9 syntax, constants and usage

nint constants are in the range [ int.MinValue, int.MaxValue ].

nuint constants are in the range [ uint.MinValue, uint.MaxValue ].

There are no MinValue or MaxValue o nint or nuint because, other than nuint.MinValue, those values cannot be emitted as constants.

#c# #.net 5 #c# 9 #nuint #system.intptr #csharp

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How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

• Performance: It delivers optimal performance.
• Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
• UI design: React Native enables you to design simple and responsive UI for your mobile app.
• 3rd party plugins: This framework supports 3rd party plugins.
• Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

• Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
• Near-native user experience: React Native provides several native components, and these are platform agnostic.
• The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

#android app #frontend #ios app #mobile app development #benefits of react native #is react native good for mobile app development #native vs #pros and cons of react native #react mobile development #react native development #react native experience #react native framework #react native ios vs android #react native pros and cons #react native vs android #react native vs native #react native vs native performance #react vs native #why react native #why use react native

Introducing C# 9: Native-sized integers

Introduction

First what are native-sized integers ? They are designed to be a integer whose size is specific to the platform. In other words, an instance of this type must be 32 bits on 32-bit and 64-bit hardware and operating systems on 64-bit hardware and operating systems.

The CLR / JIT / MSIL supports the definition and usage of native integers / unsigned integers. Since .NET 4.0’s CLR, it is possible to add / substract an integer from a System.IntPtr / System.UIntPtr, and it is possible to do == / != comparisons with other System.IntPtr / System.UIntPtr, but any other comparison operation is prohibited…, i.e. they cannot be compared with >, >= etc. to each other, so System.IntPtr/ System.UIntPtr remain very basic in the amount of pointer arithmetic.

C## 9 brings what mono has brought before: language support for a native-sized signed and unsigned integer types with nintand nuint keyword. The motivation here is for interop scenarios and for low-level libraries, so might not use them often.

Types nint and nuint are represented by the underlying types System.IntPtr and System.UIntPtr with compiler surfacing additional conversions and operations for those types as native ints.

Sources: Microsoft and Github

C## 9 syntax, constants and usage

nint constants are in the range [ int.MinValue, int.MaxValue ].

nuint constants are in the range [ uint.MinValue, uint.MaxValue ].

There are no MinValue or MaxValue o nint or nuint because, other than nuint.MinValue, those values cannot be emitted as constants.

#c# #.net 5 #c# 9 #nuint #system.intptr #csharp

Let's Give Some Unit Testing Love to C# 8 and C# 9 Features

According to StackOverflow, C## is one of the most-loved programming languages. And I completely understand that—it is powerful, easy to learn and consistently improving and developing. It is a living language. :)

The last couple of years, there were new features added to the languages, and the new versions keep coming up—C## 7, C## 8, C## 9.

As you know, we at Progress Telerik are proud that our products are always in sync with the latest things in the .NET world, and C## 9 and JustMock are no exception.

#c #c# #c#8 #c#9

How to Run C/C++ in Sublime Text?

C and C++ are the most powerful programming language in the world. Most of the super fast and complex libraries and algorithms are written in C or C++. Most powerful Kernel programs are also written in C. So, there is no way to skip it.

In programming competitions, most programmers prefer to write code in C or C++. Tourist is considered the worlds top programming contestant of all ages who write code in C++.

During programming competitions, programmers prefer to use a lightweight editor to focus on coding and algorithm designing. Vim, Sublime Text, and Notepad++ are the most common editors for us. Apart from the competition, many software developers and professionals love to use Sublime Text just because of its flexibility.

I have discussed the steps we need to complete in this blog post before running a C/C++ code in Sublime Text. We will take the inputs from an input file and print outputs to an output file without using freopen file related functions in C/C++.

#cpp #c #c-programming #sublimetext #c++ #c/c++

Dicey Issues in C/C++

If you are familiar with C/C++then you must have come across some unusual things and if you haven’t, then you are about to. The below codes are checked twice before adding, so feel free to share this article with your friends. The following displays some of the issues:

1. Using multiple variables in the print function
2. Comparing Signed integer with unsigned integer
3. Putting a semicolon at the end of the loop statement
4. C preprocessor doesn’t need a semicolon
5. Size of the string matters
6. Macros and equations aren’t good friends
7. Never compare Floating data type with double data type
8. Arrays have a boundary
9. Character constants are different from string literals
10. Difference between single(=) and double(==) equal signs.

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The below code generates no error since a print function can take any number of inputs but creates a mismatch with the variables. The print function is used to display characters, strings, integers, float, octal, and hexadecimal values onto the output screen. The format specifier is used to display the value of a variable.

1. %d indicates Integer Format Specifier
2. %f indicates Float Format Specifier
3. %c indicates Character Format Specifier
4. %s indicates String Format Specifier
5. %u indicates Unsigned Integer Format Specifier
6. %ld indicates Long Int Format Specifier

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A signed integer is a 32-bit datum that encodes an integer in the range [-2147483648 to 2147483647]. An unsigned integer is a 32-bit datum that encodes a non-negative integer in the range [0 to 4294967295]. The signed integer is represented in twos-complement notation. In the below code the signed integer will be converted to the maximum unsigned integer then compared with the unsigned integer.

#problems-with-c #dicey-issues-in-c #c-programming #c++ #c #cplusplus