Programming Tutorials, articles, and code samples

Dynamically modify the option set in Dynamics 365 forms

Tue, 22 Aug 2023 00:00:00 +0000

To dynamically modify the option set in Dynamics 365 forms, either on Form Load or on a specific field OnChange event, we can replace the options in the option set with the allowed options. This will provide a consistent and reliable behavior.

Copy Power Automate Flows from one environment to another

Thu, 27 Jul 2023 00:00:00 +0000

You can copy Power Automate flows from one environment to another environment using the "Export" and "Import" features. This allows you to move flows and their associated components, such as connectors, triggers, actions, and settings, from one environment (e.g., development) to another (e.g., production) without recreating them manually

Moving changes from a development environment (sandbox) to a production environment in Dynamics 365

Tue, 25 Jul 2023 00:00:00 +0000

By following this process, you can safely move changes from the development environment to the production environment in Dynamics 365 while minimizing the risk of affecting production data or settings. Always perform thorough testing and validation before deploying changes to the production environment.

Is it safe to delete bin folder in a razorsharp c# project folder?

Thu, 01 Jun 2023 00:00:00 +0000

In a C# Razor project, the bin folder contains compiled binary files (such as DLLs) generated from the project's source code. These files are necessary for the project to run correctly. Therefore, it is generally not safe to delete the bin folder manually.

One client credential type required either: ClientSecret, Certificate, ClientAssertion or AppTokenProvider must be defined when creating a Confidential Client. Only specify one

Thu, 01 Jun 2023 00:00:00 +0000

One client credential type required either: ClientSecret, Certificate, ClientAssertion or AppTokenProvider must be defined when creating a Confidential Client. Only specify one

Severity Code Description Project File Line Suppression State Warning Found conflicts between different versions of the same dependent assembly.

Thu, 01 Jun 2023 00:00:00 +0000

Severity Code Description Project File Line Suppression State Warning Found conflicts between different versions of the same dependent assembly.

Severity Code Description Project File Line Suppression State Error CS1061 'string[]' does not contain a definition for 'Any' and no accessible extension method 'Any' accepting a first argument of type 'string[]' could be found (are you missing a using directive or an assembly reference?)

Thu, 01 Jun 2023 00:00:00 +0000

Severity Code Description Project File Line Suppression State Error CS1061 'string[]' does not contain a definition for 'Any' and no accessible extension method 'Any' accepting a first argument of type 'string[]' could be found (are you missing a using directive or an assembly reference?)

Pagination in ASP.net core application

Thu, 01 Jun 2023 00:00:00 +0000

To display a read-only grid of records with pagination in an ASP.NET Core view, you can follow these steps:

Severity Code Description Project File Line Suppression State Error CS0308 The non-generic type 'List' cannot be used with type arguments.

Thu, 01 Jun 2023 00:00:00 +0000

Severity Code Description Project File Line Suppression State Error CS0308 The non-generic type 'List' cannot be used with type arguments.

Getting values from appsettings.json ASP.NET

Thu, 01 Jun 2023 00:00:00 +0000

To access values from appsettings.json in an ASP.NET Core application, you can use the IConfiguration interface

Microsoft.Identity vs Microsoft.IdentityModel.Clients.ActiveDirectory

Thu, 01 Jun 2023 00:00:00 +0000

To work with the newer Microsoft.Identity package instead of the deprecated Microsoft.IdentityModel.Clients.ActiveDirectory, you can use the ConfidentialClientApplicationBuilder class to acquire a token

HttpError is not found in Asp,net core project

Thu, 01 Jun 2023 00:00:00 +0000

In the newer versions of ASP.NET Core, the HttpError type is not available. Instead, you can handle the error response using the HttpResponseMessage object and extract the error message from the response content

Things to note when changing a function to async in your controller

Thu, 01 Jun 2023 00:00:00 +0000

When changing a function to an asynchronous function, there are several things to note

Severity Code Description Project File Line Suppression State Error CS0246 The type or namespace name 'JToken' could not be found.

Thu, 01 Jun 2023 00:00:00 +0000

Severity Code Description Project File Line Suppression State Error CS0246 The type or namespace name 'JToken' could not be found.

Passing a model globally to all Views in your Asp.net webapp

Thu, 01 Jun 2023 00:00:00 +0000

Let us say you have a model named customerSettings that you initialize when the user logs in and then you want to save it globally for later use throughout the application in all views

Severity Code Description Project File Line Suppression State Error CS0103 The name 'JsonConvert' does not exist in the current context.

Thu, 01 Jun 2023 00:00:00 +0000

Severity Code Description Project File Line Suppression State Error CS0103 The name 'JsonConvert' does not exist in the current context.

Severity Code Description Project File Line Suppression State Error CS0103 The name 'Encoding' does not exist in the current context

Thu, 01 Jun 2023 00:00:00 +0000

Severity Code Description Project File Line Suppression State Error CS0103 The name 'Encoding' does not exist in the current context

Pass the same model to multiple views within the same controller

Thu, 01 Jun 2023 00:00:00 +0000

To pass the same model to multiple views within the same controller, you can make use of the ViewBag property or strongly typed views

Button that is only clickable when the checkbox is checked

Thu, 01 Jun 2023 00:00:00 +0000

To implement a checkbox and a button that is only clickable when the checkbox is checked, you can use JavaScript/jQuery. Here's an example of how you can achieve this

Call an Action in a controller when user clicks a button in View

Thu, 01 Jun 2023 00:00:00 +0000

Let us assume you have a button in your view whose id is 'authorizeButton' and you want to submit to your Action named 'Authorize' in your controller named 'SandboxApi'. To call the Authorize action in the SandboxApiController when the user clicks the button, you can follow these steps

AmbiguousMatchException: The request matched multiple endpoints.

Thu, 01 Jun 2023 00:00:00 +0000

The AmbiguousMatchException you encountered means that there are multiple endpoints in your code that match the incoming request. This can happen when you have multiple actions in a controller with the same name and same HTTP verb

Development Mode in IIS for Asp.net projects

Thu, 01 Jun 2023 00:00:00 +0000

Swapping to Development environment will display more detailed information about the error that occurred. To set the ASPNETCORE_ENVIRONMENT environment variable in IIS, you can follow these steps

Do we need to redeploy the webapp when appsettings.json change?s

Thu, 01 Jun 2023 00:00:00 +0000

No, you don't need to redeploy the web app when changes are made to the appsettings.json file. The appsettings.json file is typically read at runtime by the application, so any changes made to it will be picked up by the application without requiring a redeployment

Use a dynamic table name in a SQL Server SELECT statement

Fri, 26 May 2023 00:00:00 +0000

To use a dynamic table name in a SQL Server SELECT statement, you can utilize dynamic SQL using the EXEC or sp_executesql statement. Here's an example of how you can achieve it

Send push notifications using Expo tokens in PHP

Fri, 19 May 2023 00:00:00 +0000

To send push notifications using Expo tokens in PHP, you need to use Expo's Push Notifications API. Here's an example of how you can modify your PHP code

Session variables in React Native - Expo

Wed, 17 May 2023 00:00:00 +0000

In React Native and Expo, there is no direct support for session variables like in traditional web development with server-side technologies. However, you can achieve similar functionality by using alternative approaches.

Sample my.cnf (my.ini) for MySQL with 1GB RAM

Wed, 17 May 2023 00:00:00 +0000

For a VM with 1GB memory running both MySQL and Apache, you'll need to configure MySQL to use an appropriate amount of memory to ensure optimal performance. Here's a sample my.cnf configuration that you can start with

mysqldumpslow in MySQL - Summarize slow query log.

Wed, 17 May 2023 00:00:00 +0000

In MySQL, you can check which queries took longer to execute and potentially caused the server to slow down by enabling the Slow Query Log feature. The Slow Query Log records queries that take longer than a specified amount of time to execute. Here are the steps to enable and utilize the Slow Query Log

Finding slow queries in MySQL - Enable slow query log.

Wed, 17 May 2023 00:00:00 +0000

use axios in Expo to call APIs

Tue, 16 May 2023 00:00:00 +0000

You can use axios in Expo projects. axios is a popular JavaScript library for making HTTP requests, and it can be used in Expo apps as well.

TypeError: Cannot read property 'isDevice' of undefined - expo

Tue, 16 May 2023 00:00:00 +0000

If you get this error, TypeError: Cannot read property 'isDevice' of undefined while using Device.isDevice in your expo project, you are probably using a wrong import method.

Start background location tracking after login in expo react native

Tue, 16 May 2023 00:00:00 +0000

If you want to have a background job in an expo app to get the location of the device continuously and the job should start only after login is successful. You can define the background task in app.js and then when login is successful in another component, (for example user.js) you can start the job.

set up a global error handler in React Native (expo)

Tue, 16 May 2023 00:00:00 +0000

Note: It's generally recommended to handle promise rejections at their source and provide appropriate error handling within your code, rather than relying on a global error handler.

Read a file having a list of telnet commands and execute them one by one using Java

Thu, 11 May 2023 00:00:00 +0000

You can achieve this by reading the list of telnet commands from a file and executing them one by one using the ProcessBuilder class in Java. Here's some sample code that demonstrates how to do it

#if and #else in C

Thu, 11 May 2023 00:00:00 +0000

In C, #if and #else are preprocessor directives that allow conditional compilation of code based on whether a given macro is defined or not.

The output of System.out.println(5>>2) in Java

Thu, 11 May 2023 00:00:00 +0000

In this case, 5 is represented in binary as 00000101. When we shift it right by two positions, we get 00000001, which is the binary representation of 1. Therefore, the output is 1

The output of System.out.println(5<<2) in Java

Thu, 11 May 2023 00:00:00 +0000

In this case, 5 is represented in binary as 00000101. When we shift it left by two positions, we get 00010100, which is the binary representation of 20. Therefore, the output is 20

Open a .docx file and show content in a TextArea using Java

Thu, 11 May 2023 00:00:00 +0000

It is possible to read a .docx file using Java and display its contents in a text area, but it requires additional libraries and code to handle the file format.

Show a calendar for user input in JSP

Thu, 11 May 2023 00:00:00 +0000

To show a calendar in a text field when the user enters it in JSP, you can use JavaScript and jQuery. Here's an example:

SafeAreaView in React Native

Wed, 10 May 2023 00:00:00 +0000

In React Native, you can use the SafeAreaView component to ensure that your content is displayed within the visible area of the device screen. The SafeAreaView component is used to handle elements that need to be shown within the safe area boundaries of a device. You can use the following example code to properly format the container style in React Native

Some dependencies are incompatible with the installed expo version:

Wed, 10 May 2023 00:00:00 +0000

When you start an expo project by running 'expo start' or 'npx expo start', if you are getting this error:

A sample Hibernate Web Application using Servlets

Mon, 08 May 2023 00:00:00 +0000

A Hibernate web application uses Session and Transaction almost like a standalone application. However, some common patterns are useful. You can now write an EventManagerServlet. This servlet can list all events stored in the database, and it provides an HTML form to enter new events.

Step by Step Hibernate - Your First Hibernate Application

Mon, 08 May 2023 00:00:00 +0000

This could well be your first Hibernate Application. In this tutorial a step by step approach is taken to show you how to use hibernate in your java applications. For this example, we will set up a small database application that can store events we want to attend and information about the host(s) of these events. This explains the basics of Hibernate. You can get started with Hibernate using this tutorial and extend the functionalities from here.

Step by Step guide to setup freetts for Java

Mon, 08 May 2023 00:00:00 +0000

Follow these steps to setup of freetts for Java in your PC

Sending Email using JSP

Fri, 05 May 2023 00:00:00 +0000

This example uses Gmail as the SMTP server, but you can use any other SMTP server by modifying the "host" and "port" properties accordingly.

Encrypting Passwords in Tomcat using Servlets

Thu, 04 May 2023 00:00:00 +0000

Encrypting passwords is an essential aspect of web application security. Here are the steps to encrypt passwords in Tomcat using Servlets:

Steps to get a Free SSL certificate for your Tomcat

Thu, 04 May 2023 00:00:00 +0000

Most often web developers face the issue of getting a free SSL certificate for their websites. Though the process of generating a SSL certificate is easy, it is quite confusing if you are doing it for the first time. If you are one such developer then here is the solution for you step by step.

Data Access Technologies in Java

Thu, 04 May 2023 00:00:00 +0000

Java offers several data access technologies for connecting to various types of data sources, such as databases, flat files, and web services. Some of the popular data access technologies in Java are:

Of Object, equals (), == and hashCode ()

Thu, 04 May 2023 00:00:00 +0000

In Java, the Object class is the root class of all classes, which means that every class in Java is derived from the Object class. The Object class provides several methods that can be overridden in the derived classes, including equals(), ==, and hashCode().

Handling Duplicate Form Submissions in Struts

Thu, 04 May 2023 00:00:00 +0000

Duplicate form submissions are acceptable in some cases. Such scenarios are called idempotent transitions. When multiple submissions of data are not critical enough to impact the behavior of the application, duplicate form submissions do not pose a threat.

DispatchAction in Struts

Thu, 04 May 2023 00:00:00 +0000

DispatchAction is another useful built-in Struts Action. However you cannot use it as is. You will have to extend it to provide your own implementation. An example will make things clear. Consider an online credit card application. Customers fill the credit card application online. The bank personnel get a List screen as shown in Figure below and they can act in one of four ways - Approve, Reject or Add Comment. Consequently there are three images each being a .

Different Versions of Mac OS X

Wed, 03 May 2023 00:00:00 +0000

With the exception of Mac OS X Server 1.0 and the original public beta, Mac OS X versions are named after big cats. Prior to its release, version 10.0 was code named "Cheetah" internally at Apple, and version 10.1 was code named internally as "Puma". After the immense buzz surrounding version 10.2, codenamed "Jaguar", Apple's product marketing began openly using the code names to promote the operating system. 10.3 was marketed as "Panther", 10.4 as "Tiger", 10.5 as "Leopard", the current version 10.6 as "Snow Leopard", and the upcoming 10.7 as "Lion". "Panther", "Tiger" and "Leopard" are registered as trademarks of Apple, but "Cheetah", "Puma" and "Jaguar" have never been registered. Apple has also registered "Lynx" and "Cougar" as trademarks, though these were allowed to lapse. Computer retailer Tiger Direct sued Apple for its use of the name "Tiger". On May 16, 2005 a US federal court in the Southern District of Florida ruled that Apple's use does not infringe on Tiger Direct's trademark.

Downloading and Installing the AWS SDK for .NET

Wed, 03 May 2023 00:00:00 +0000

By default, the AWS SDK for .NET is installed in the Program Files directory, which requires administrator privileges. You can install the AWS SDK for .NET as a non-administrator if you choose a different installation directory.

Introduction to the AWS SDK for .NET

Wed, 03 May 2023 00:00:00 +0000

The AWS .NET SDK is a single, downloadable package that includes Visual Studio project templates, the AWS .NET library, C# code samples, and documentation. The AWS .NET SDK makes it easier for Windows developers to build .NET applications that tap into the cost-effective, scalable, and reliable AWS infrastructure services such as Amazon S3, EC2, and SimpleDB.

Using the AWS SDK for Java in Eclipse

Wed, 03 May 2023 00:00:00 +0000

If you use the AWS Toolkit for Eclipse, you can also start a new project in Eclipse based on the AWS SDK for Java or add the SDK to an existing Java project.

Using the AWS SDK for Java

Wed, 03 May 2023 00:00:00 +0000

Download the AWS SDK for Java from the SDK web page at http://aws.amazon.com/sdkforjava. After downloading the SDK, extract the contents into a folder.

sql if null then 0

Tue, 02 May 2023 00:00:00 +0000

In SQL, you can use the IS NULL condition to check if a value is NULL. To return 0 when the value is NULL, you can use the COALESCE function or the IFNULL function, depending on the database system you are using.

Is J2ME dead?

Tue, 02 May 2023 00:00:00 +0000

J2ME (Java 2 Micro Edition) is a platform that allows developers to build mobile and embedded applications that can run on resource-constrained devices. Although its popularity has decreased in recent years due to the emergence of more powerful mobile operating systems and frameworks, J2ME is still used in some specific use cases, including

Guidelines for Struts Application Development

Mon, 01 May 2023 00:00:00 +0000

Struts application development in enterprise applications requires discipline. We are not referring to any particular methodology; just some guidelines for Struts based application development for enterprise applications. In this section a stepby-step approach for Struts application development cycle is provided.

DateFormat sample program in Java

Mon, 01 May 2023 00:00:00 +0000

DateFormat is an abstract class that provides the ability to format and parse dates and times. The getDateInstance() method returns an instance of DateFormat that can format date information. It is available in these forms:

concurrent.Flow instead of Observable class in Java

Mon, 01 May 2023 00:00:00 +0000

To observe an observable object, you must implement the Observer interface. This interface defines only the one method shown here:

mixin in JavaScript

Wed, 26 Apr 2023 00:00:00 +0000

In JavaScript, a mixin is a way to add or "mix in" functionality to an object without inheriting from it. It's a way to combine objects to create a new object that has the properties and methods of both objects.

apply() in JavaScript

Wed, 26 Apr 2023 00:00:00 +0000

apply() is a method in JavaScript that allows you to call a function with a given this value and arguments provided as an array. It is similar to the call() method, but with apply(), the arguments are passed as an array, while with call(), the arguments are passed individually.

call in JavaScript

Wed, 26 Apr 2023 00:00:00 +0000

In JavaScript, call() is a method that allows you to call a function with a given this value and arguments provided individually. The syntax for call() is

bind in JavaScript

Wed, 26 Apr 2023 00:00:00 +0000

In JavaScript, the bind() method creates a new function that, when called, has its this keyword set to a specified value. It allows you to pass a specific this context to a function and returns a new function with the same code but a bound context. The syntax for using bind() is:

promise and .then() in JavaScript

Wed, 26 Apr 2023 00:00:00 +0000

A promise is an object in JavaScript that represents the eventual completion or failure of an asynchronous operation, and its resulting value. It allows you to write asynchronous code in a more synchronous way, making it easier to read and reason about. A promise can be in one of three states:

reduce() and filter() in JavaScript

Wed, 26 Apr 2023 00:00:00 +0000

reduce() and filter() are higher-order array functions in JavaScript that allow you to perform operations on arrays in a more concise and readable way.

IIFE in JavaScript

Wed, 26 Apr 2023 00:00:00 +0000

IIFE stands for Immediately Invoked Function Expression. It's a way to create a self-executing function in JavaScript. The main idea is to write a function that is executed immediately after it's defined

map() in JavaScript

Wed, 26 Apr 2023 00:00:00 +0000

In JavaScript, map() is a built-in method available on arrays that allows you to iterate through each element of an array and create a new array by performing some operation on each element. The syntax of map() is as follows:

prototype in JavaScript

Wed, 26 Apr 2023 00:00:00 +0000

In JavaScript, every object has a prototype. A prototype is an object that is used as a template for creating new objects. When an object is created, it inherits properties and methods from its prototype.

=> in JavaScript

Wed, 26 Apr 2023 00:00:00 +0000

In JavaScript, => is called an arrow function or a fat arrow function. It's a shorthand syntax for defining functions that was introduced in ECMAScript 6 (ES6).

Different ways you can pass arguments to a function in JavaScript

Tue, 25 Apr 2023 00:00:00 +0000

Here are the different ways you can pass arguments to a function in JavaScript, using the area function example:

sparse array in JavaScript

Tue, 25 Apr 2023 00:00:00 +0000

In JavaScript, a sparse array is an array in which not all elements are initialized with values. This means that there are gaps or missing indexes between the elements that actually have values.

for, for..of, and for..in loops in JavaScript

Tue, 25 Apr 2023 00:00:00 +0000

In JavaScript, there are several ways to loop through arrays and objects. Here's an overview of the for, for..of, and for..in loops:

while and do-while in JavaScript

Tue, 25 Apr 2023 00:00:00 +0000

In JavaScript, while and do-while are two types of loops that can be used to repeat a block of code multiple times.

== vs === in JavaScript

Tue, 25 Apr 2023 00:00:00 +0000

In JavaScript, == and === are two comparison operators that are used to compare two values or variables.

let, const, and var in JavaScript

Tue, 25 Apr 2023 00:00:00 +0000

In JavaScript, let, const, and var are used for declaring variables, but they have different scopes and behaviors. Here are the main differences:

Symbol() function in JavaScript

Tue, 25 Apr 2023 00:00:00 +0000

Symbol() is a built-in function in JavaScript that returns a unique symbol value. Symbols are a new primitive data type introduced in ECMAScript 6, which can be used as keys in objects, allowing for more efficient property lookup and avoiding naming collisions

Boolean() function in JavaScript

Tue, 25 Apr 2023 00:00:00 +0000

The Boolean() function in JavaScript is used to convert a value into a boolean data type. The function takes a single parameter and returns true or false.

Template literals vs String concatenation in JavaScript

Tue, 25 Apr 2023 00:00:00 +0000

Template literals and string concatenation are two ways to combine strings in JavaScript.

Calculator application in Java

Sun, 23 Apr 2023 00:00:00 +0000

This sample program uses Java Swing to display a calculation application. This program can be studied in detail to understand the basic Java constructs and Java Swing.

Getting Started with Java

Sun, 23 Apr 2023 00:00:00 +0000

If you are familiar with C then Java should be very familiar to you in terms of syntax. If you are a C++ programmer the Java will be easier still since Java is also purely an Object Oriented Programming without some of the features like Pointers in C++.

How Java is orgranized?

Sun, 23 Apr 2023 00:00:00 +0000

Java has changed tremendously and included more features over the years. The first basic version of Java comprised of just six packages. A package is a collection of Java classes. Sun grouped six different packages with classes doing specific jobs. For example the 'java.io' package consists of all classes that do input output such as reading files, writing to files etc. where as the 'java.net' package consists of classes that do networking such as making a HTTP connection etc

disable the back arrow in the header of a screen in a React Navigation Stack Navigator

Fri, 21 Apr 2023 00:00:00 +0000

To disable the back arrow in the header of a screen in a React Navigation Stack Navigator, you can set the headerLeft option to null in the screenOptions prop of the navigator. Here's an example:

react-native-android-location-services-dialog-box alternative in expo

Mon, 17 Apr 2023 00:00:00 +0000

react-native-android-location-services-dialog-box is a library that is specific to the React Native environment and is not compatible with Expo, which uses a different set of APIs for location services. In Expo, you can use the expo-location package to access the device's location services.

'import' and 'export' may only appear at the top level - React Native

Mon, 17 Apr 2023 00:00:00 +0000

In JavaScript modules, import and export statements can only appear at the top level of a file, not inside functions, loops, or conditionals. If you need to conditionally import a module or dynamically load a module, you can use a dynamic import statement.

react-native-background-job alternative in expo app

Mon, 17 Apr 2023 00:00:00 +0000

react-native-background-job is a library used for running background jobs or tasks in a React Native application. However, since Expo manages a lot of native modules for you, you cannot use this library directly in your Expo app as it requires native code changes.

Show and hide links based on button click

Mon, 17 Apr 2023 00:00:00 +0000

Here is a code snippet that should show and hide the links based on the button clicked

Error Handling in TextInput - React Native

Mon, 17 Apr 2023 00:00:00 +0000

In this example, the handleBlur function is triggered when the TextInput loses focus. It checks if the value of the TextInput is empty and sets an error message if it is. The error message is then displayed using conditional rendering.

Send push notifications to android/ios sample code using expo - react native

Thu, 13 Apr 2023 00:00:00 +0000

Expo Notifications is a module provided by Expo that makes it easy to send and receive push notifications in your Expo app. Here are some advantages of using Expo Notifications:

expo-secure-store vs expo-file-system in expo - react native

Thu, 13 Apr 2023 00:00:00 +0000

Expo provides two different packages for managing data storage in your app: expo-secure-store and expo-file-system.

loadAsync() vs useFonts() in expo - react native

Thu, 13 Apr 2023 00:00:00 +0000

expo-font provides two methods for loading custom fonts in React Native: loadAsync() and useFonts(). Here are some key differences between the two

OpenType (OTF) vs TrueType (TTF)

Thu, 13 Apr 2023 00:00:00 +0000

Both OpenType (OTF) and TrueType (TTF) are widely used font formats, and both have their own advantages and disadvantages.

Three dots ... - Spread syntax in React Native

Tue, 11 Apr 2023 00:00:00 +0000

In React Native, the three dots (...) are used to spread the contents of an array or an object. This is called the spread syntax.

What is Semver?

Tue, 11 Apr 2023 00:00:00 +0000

Semver stands for "Semantic Versioning" and it's a versioning system for software packages that uses a specific format to convey information about the changes in each version of the software.

StackNavigator example in React Native

Sun, 09 Apr 2023 00:00:00 +0000

In this example, we import createStackNavigator and NavigationContainer from @react-navigation/native. We then define two screens, HomeScreen and DetailsScreen, which are rendered using Stack.Screen components inside a Stack.Navigator component. We also define a Stack constant to hold our StackNavigator.

create-expo-app vs expo init

Sun, 09 Apr 2023 00:00:00 +0000

npx create-expo-app is the recommended way to create a new Expo project instead of expo init. npx create-expo-app creates a new Expo project with the latest Expo SDK version and the new project structure introduced in SDK 41.

Touchables in React Native

Sun, 09 Apr 2023 00:00:00 +0000

In React Native, handling touches can be done using various components like TouchableOpacity, TouchableHighlight, TouchableWithoutFeedback, and TouchableNativeFeedback.

Image component in React Native

Sun, 09 Apr 2023 00:00:00 +0000

In React Native, the Image component is used to display images. It supports several props to control how the image is displayed

justifyContent in React Native

Sat, 08 Apr 2023 00:00:00 +0000

justifyContent is a flexbox property in React Native used to align child elements along the main axis of their container. It controls how extra space in the container is distributed among the child elements. Here's an example to help understand how justifyContent works:

Layout direction property in React Native

Sat, 08 Apr 2023 00:00:00 +0000

The layout direction property in React Native is used to specify the direction in which the elements of a component are laid out. It has two possible values:

flexDirection in React Native

Sat, 08 Apr 2023 00:00:00 +0000

flexDirection is a CSS property in React Native that is used to define the direction of the main axis of a container. It has two possible values:

flex in React Native

Sat, 08 Apr 2023 00:00:00 +0000

In React Native, the flex property is used to specify how an item should grow or shrink to fill the available space. It is commonly used to create responsive layouts that adapt to different screen sizes.

expo-secure-store to store sensitive data securely in React Native

Fri, 07 Apr 2023 00:00:00 +0000

expo-secure-store provides an API to securely store sensitive data such as authentication tokens, passwords, and other secrets. This library uses the operating system's secure storage mechanism to store the data.

Login Sample in React Native using fetch()

Fri, 07 Apr 2023 00:00:00 +0000

Let's say we have a login screen with two inputs, one for the email and one for the password, and a "Sign In" button. When the user clicks the "Sign In" button, we want to send a request to the server to check if the email and password are valid.

Expo Build Process for React Native Projects

Fri, 07 Apr 2023 00:00:00 +0000

The Expo build process can be broken down into several steps

Advantages of using Expo to develop React Native Projects

Fri, 07 Apr 2023 00:00:00 +0000

Expo provides a development environment that abstracts away the platform-specific implementation details of mobile app development. It provides an abstraction layer that enables developers to write cross-platform code that works seamlessly across both Android and iOS devices

React.FC in React - TypeScript

Fri, 07 Apr 2023 00:00:00 +0000

React.FC is a generic type alias in TypeScript used to define a function component in React. It stands for "Function Component" and is a shorthand for defining a function that returns JSX elements.

export in React Native - JavaScript

Fri, 07 Apr 2023 00:00:00 +0000

In JavaScript, the export keyword is used to export a function, object, or value from a module so that it can be imported and used in other modules. In React Native, you can use the export keyword to export components, functions, or variables from a JavaScript file.

Remove all installed dependencies and install them again

Thu, 06 Apr 2023 00:00:00 +0000

To remove all installed packages and reinstall them in an Expo project, you can follow these steps

Keep your android phone awake while debugging

Thu, 06 Apr 2023 00:00:00 +0000

You can adjust the sleep settings of your Android device to keep it from going to sleep while debugging your Expo app. Here's how you can do it

npm install vs npx expo install

Wed, 05 Apr 2023 00:00:00 +0000

Both npm install and npx expo install are used to install dependencies in a React Native project. However, there are some differences between the two

state vs props in React Native

Wed, 05 Apr 2023 00:00:00 +0000

In React Native, state and props are two important concepts that allow you to manage and update the behavior and appearance of your app components

async vs defer in JavaScript - When to use them?

Tue, 04 Apr 2023 00:00:00 +0000

Both async and defer are attributes that can be added to a script tag in HTML to control how the script is loaded and executed in the web page. Here are the differences between the two

compileSdkVersion vs buildToolsVersion in app/build.gradle