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When we have a chance to participate in an Angular project from the very beginning, we probably have an impact on many architectural aspects. One of these aspects is the selection of an appropriate techniques and testing tools. In plethora of projects, the standard tool that comes with Angular is used: Karma and Jasmine.
However, it is important to realize that the choice of Test Runner is not limited to Karma. For some reasons, it is worth taking an interest in Jest.
⌠and honestly, many more functionalities that you can read about in the documentation. Now, letâs focus on the practical aspect and purpose, which is adding JEST to your Angular project.
#programming #angular #testing #software-development #jest
1602707460
When we have a chance to participate in an Angular project from the very beginning, we probably have an impact on many architectural aspects. One of these aspects is the selection of an appropriate techniques and testing tools. In plethora of projects, the standard tool that comes with Angular is used: Karma and Jasmine.
However, it is important to realize that the choice of Test Runner is not limited to Karma. For some reasons, it is worth taking an interest in Jest.
⌠and honestly, many more functionalities that you can read about in the documentation. Now, letâs focus on the practical aspect and purpose, which is adding JEST to your Angular project.
#programming #angular #testing #software-development #jest
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Android Projects with Source Code â Your entry pass into the world of Android
Hello Everyone, welcome to this article, which is going to be really important to all those whoâre in dilemma for their projects and the project submissions. This article is also going to help you if youâre an enthusiast looking forward to explore and enhance your Android skills. The reason is that weâre here to provide you the best ideas of Android Project with source code that you can choose as per your choice.
These project ideas are simple suggestions to help you deal with the difficulty of choosing the correct projects. In this article, weâll see the project ideas from beginners level and later weâll move on to intermediate to advance.
Before working on real-time projects, it is recommended to create a sample hello world project in android studio and get a flavor of project creation as well as execution: Create your first android project
Android Project: A calculator will be an easy application if you have just learned Android and coding for Java. This Application will simply take the input values and the operation to be performed from the users. After taking the input itâll return the results to them on the screen. This is a really easy application and doesnât need use of any particular package.
To make a calculator youâd need Android IDE, Kotlin/Java for coding, and for layout of your application, youâd need XML or JSON. For this, coding would be the same as that in any language, but in the form of an application. Not to forget creating a calculator initially will increase your logical thinking.
Once the user installs the calculator, theyâre ready to use it even without the internet. Theyâll enter the values, and the application will show them the value after performing the given operations on the entered operands.
Source Code: Simple Calculator Project
Android Project: This is a good project for beginners. A Reminder App can help you set reminders for different events that you have throughout the day. Itâll help you stay updated with all your tasks for the day. It can be useful for all those who are not so good at organizing their plans and forget easily. This would be a simple application just whose task would be just to remind you of something at a particular time.
To make a Reminder App you need to code in Kotlin/Java and design the layout using XML or JSON. For the functionality of the app, youâd need to make use of AlarmManager Class and Notifications in Android.
In this, the user would be able to set reminders and time in the application. Users can schedule reminders that would remind them to drink water again and again throughout the day. Or to remind them of their medications.
Android Project: Another beginnerâs level project Idea can be a Quiz Application in android. Here you can provide the users with Quiz on various general knowledge topics. These practices will ensure that youâre able to set the layouts properly and slowly increase your pace of learning the Android application development. In this youâll learn to use various Layout components at the same time understanding them better.
To make a quiz application youâll need to code in Java and set layouts using xml or java whichever you prefer. You can also use JSON for the layouts whichever preferable.
In the app, questions would be asked and answers would be shown as multiple choices. The user selects the answer and gets shown on the screen if the answers are correct. In the end the final marks would be shown to the users.
Android Project: Tic-Tac-Toe is a nice game, I guess most of you all are well aware of it. This will be a game for two players. In this android game, users would be putting X and O in the given 9 parts of a box one by one. The first player to arrange X or O in an adjacent line of three wins.
To build this game, youâd need Java and XML for Android Studio. And simply apply the logic on that. This game will have a set of three matches. So, itâll also have a scoreboard. This scoreboard will show the final result at the end of one complete set.
Upon entering the game theyâll enter their names. And thatâs when the game begins. Theyâll touch one of the empty boxes present there and get their turn one by one. At the end of the game, there would be a winner declared.
Source Code: Tic Tac Toe Game Project
Android Project: A stopwatch is another simple android project idea that will work the same as a normal handheld timepiece that measures the time elapsed between its activation and deactivation. This application will have three buttons that are: start, stop, and hold.
This application would need to use Java and XML. For this application, we need to set the timer properly as it is initially set to milliseconds, and that should be converted to minutes and then hours properly. The users can use this application and all theyâd need to do is, start the stopwatch and then stop it when they are done. They can also pause the timer and continue it again when they like.
Android Project: This is another very simple project idea for you as a beginner. This application as the name suggests will be a To-Do list holding app. Itâll store the users schedules and their upcoming meetings or events. In this application, users will be enabled to write their important notes as well. To make it safe, provide a login page before the user can access it.
So, this app will have a login page, sign-up page, logout system, and the area to write their tasks, events, or important notes. You can build it in android studio using Java and XML at ease. Using XML you can build the user interface as user-friendly as you can. And to store the usersâ data, you can use SQLite enabling the users to even delete the data permanently.
Now for users, they will sign up and get access to the write section. Here the users can note down the things and store them permanently. Users can also alter the data or delete them. Finally, they can logout and also, login again and again whenever they like.
Android Project: This app is aimed at the conversion of Roman numbers to their significant decimal number. Itâll help to check the meaning of the roman numbers. Moreover, it will be easy to develop and will help you get your hands on coding and Android.
You need to use Android Studio, Java for coding and XML for interface. The application will take input from the users and convert them to decimal. Once it converts the Roman no. into decimal, it will show the results on the screen.
The users are supposed to just enter the Roman Number and theyâll get the decimal values on the screen. This can be a good android project for final year students.
Android Project: Well, coming to this part that is Virtual Dice or a random no. generator. It is another simple but interesting app for computer science students. The only task that it would need to do would be to generate a number randomly. This can help people whoâre often confused between two or more things.
Using a simple random number generator you can actually create something as good as this. All youâd need to do is get you hands-on OnClick listeners. And a good layout would be cherry on the cake.
The userâs task would be to set the range of the numbers and then click on the roll button. And the app will show them a randomly generated number. Isnât it interesting ? Try soon!
Android Project: This application is very important for you as a beginner as it will let you use your logical thinking and improve your programming skills. This is a scientific calculator that will help the users to do various calculations at ease.
To make this application youâd need to use Android Studio. Here youâd need to use arithmetic logics for the calculations. The user would need to give input to the application that will be in terms of numbers. After that, the user will give the operator as an input. Then the Application will calculate and generate the result on the user screen.
Android Project: An SMS app is another easy but effective idea. It will let you send the SMS to various no. just in the same way as you use the default messaging application in your phone. This project will help you with better understanding of SMSManager in Android.
For this application, you would need to implement Java class SMSManager in Android. For the Layout you can use XML or JSON. Implementing SMSManager into the app is an easy task, so you would love this.
The user would be provided with the facility to text to whichever number they wish also, theyâd be able to choose the numbers from the contact list. Another thing would be the Textbox, where theyâll enter their message. Once the message is entered they can happily click on the send button.
#android tutorials #android application final year project #android mini projects #android project for beginners #android project ideas #android project ideas for beginners #android projects #android projects for students #android projects with source code #android topics list #intermediate android projects #real-time android projects
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GitHub Repo:- https://github.com/PradhumnaPancholi/Figbot
Hey everyone! A little while ago, I was learning Dapp Tools as it has fantastic tools for developing and auditing smart contracts. And although I loved the experience, I soon learned that it is in the clandestine development stage. This means that casual/individual users can not depend on maintainers for support and updates.
Then I stumbled upon Foundry. It has everything that Dapp Tools offers apart from built-in symbolic execution (which is not a problem for me as I use Manticore by Trail of Bits ). And this is auditing related hence not a hindrance in smart contract development by any stretch of the imagination.
After working with Foundry for a bit, I enjoyed the experience and wanted to share that with others. Hence, this article.
This article will go through the benefits of Foundry, the installation process, developing an NFT (because everyone is interested in that), testing the contract, and deploying it with Figment Datahub.
Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
Foundry is made up of three components:
Todayâs focus is going to be on Forge. But I will be posting in-depth articles on Caste and Anvil in the upcoming weeks.
There are many smart contract development tools like Truffle, Hardhat, and Brownie. But one of my primary reasons for looking into Dapp Tools in the first place was native Solidity tests. Writing smart contracts is not hard when switching between frameworks like Hardhat and Brownie. And they are incredible tools with plugins, but one needs to be well versed in JavaScript/TypeScript and Python to perform testing.
Foundry allows us to write our tests natively in Solidity. This saves a lot of time onboarding new developers and makes the process smoother. In my experience of helping people navigate their way into smart contracts development, I have learned that the best and most efficient way for junior developers to engage with DAO/community-maintained projects is by writing tests and learning about the code-base itself. I remember Scupy Trooples once mentioned that they used the same approach while developing Alchemix Finance on Bankless.
In addition to that, built-in fuzzing, cheat codes, Cast, and Anvil make it a solid suite for testing smart contracts. There will be more detailed articles on those components coming soon. [Easy to integrate static analyzer]
Letâs dive in and build an NFT project now.
If you are on Mac or Linux, all you need to do is run two commands:
curl -L https://foundry.paradigm.xyz | bash
foundryup
Make sure to close the terminal before running foundryup
.
And Voila! You are all done.
For Windows, you need to have Rust installed and then :
cargo install --git https://github.com/foundry-rs/foundry --locked
For this article, we will be creating a simple NFT project called Figbots.
Start by creating a directory called âFigbots.â And run forge init
once you are inside the directory. This command will create a foundry project for you with git
initialized.
Letâs take a quick look at the folder structure. You have three primary folders, namely src, lib, and test. Very much self-explanatory here, you write your contracts in src
, tests in test
, and lib
contains all the libraries you installed, e.g., OpenZeppelin. In addition to that, you get foundry.toml
which contains all the configurations just like hardhat.config.js
and brownie-config.yaml
if you have used those frameworks. Another sweet thing is .github, where you can write your Github Actions. I find it really helpful for tests when working in a team.
Letâs start building! We will create a simple NFT called Figbot with a limited supply, cost (for minting), and withdrawal. With this approach, we can cover edges for different tests. First of all, rename Contract.sol
and test/Contract.t.sol
to Figbot.sol
and Figbot.t.sol
respectively. Now, we can not write smart contracts without Openzeppelin, can we?
Installing libraries with Foundry is slightly different than Hardhat and Brownie. We donât have npm or pip packages. We install libraries directly from the Source (GitHub repo) in Foundry.
forge install Openzeppelin/openzeppelin-contracts
Now we can import the ERC721URIStorage.sol extension to create our NFT. To check that everything is alright, we can run the command forge build
, and it will compile our project. The compiler will yell at you if there is something wrong. Otherwise, you will get a successful compile.
Just like any other package manager, Forge allows you to use forge install <lib>,
forge remove <lib>
, and forge update <lib>
to manage your dependencies.
We will be using three contracts from the Openzeppelin. Counters, ERC721URIStorage, and Ownable. Time to upload our asset to IPFS using Pinata. We use the Ownable contract to set deploying address owner
and have access to onlyOwner
modifier to allow only the owner to withdraw funds. Counters
to help us with token id(s) and ERC721URIStorage
to keep the NFT contract simple.
MAX_SUPPLY
to 100COST
to 0.69 etherTOKEN_URI
to CID, we receive from Pinata2. Using Counter for token id:
using Counters for Counters.Counter;
Counters.Counter private tokenIds;
3. ERC721 constructor:
constructor() ERC721(âFigbotâ, âFBTâ) {}
4. Mint function:
msg.value
is greater than COST
tokenIds.current()
is greater or equal to MAX_SUPPLY
_safeMint
and _setTokenURI
5. Withdraw function:
function withdrawFunds() external onlyOwner { uint256 balance = address(this).balance; require(balance > 0, "No ether left to withdraw"); (bool success, ) = (msg.sender).call{value: balance}(""); require(success, "Withdrawal Failed"); emit Withdraw(msg.sender, balance); }
6. TotalSupply function:
function totalSupply() public view returns (uint256) { return _tokenIds.current(); }
As we all know, testing our smart contracts is really important. In this section, we will be writing some tests to get a solid understanding of forge test
and get used to writing tests in native solidity. We will be three Foundry cheat codes (I love them!) to manage account states to fit our test scenario.
We will be testing for the following scenarios:
As we can have complex logic in our smart contracts. And they are expected to behave differently depending on the state, the account used to invoke, time, etc. To deal with such scenarios, we can use cheatcodes to manage the state of the blockchain. We can use these cheatcodes using vm
instance, which is a part of Foundryâs Test
library.
We will be using three cheatcodes in our tests :
startPrank
: Sets msg.sender
for all subsequent calls until stopPrank
is called.
stopPrank
:
Stops an active prank started by startPrank
, resetting msg.sender
and tx.origin
to the values before startPrank
was called.
deal
: Sets the balance of an address provided address to the given balance.
Foundry comes with a built-in testing library. We start by importing this test library, our contract (the one we want to test), defining the test, setting variables, and setUp
function.
pragma solidity ^0.8.13;
import"forge-std/Test.sol";
import "../src/Figbot.sol";
contract FigbotTest is Test {
Figbot figbot;
address owner = address(0x1223);
address alice = address(0x1889);
address bob = address(0x1778);
function setUp() public {
vm.startPrank(owner);
figbot = new Figbot();
vm.stopPrank();
}
}
For state variables, we create a variable figbot
of type Figbot
. This is also the place where I like to define user accounts. In Foundry, you can describe an address by using the syntax address(0x1243)
. you can use any four alphanumeric characters for this. I have created the accounts named owner, Alice, and bob, respectively.
Now our setUp
function. This is a requirement for writing tests in Foundry. This is where we do all the deployments and things of that nature. I used the cheatcode startPrank
to switch the user to the âowner.â By default, Foundry uses a specific address to deploy test contracts. But that makes it harder to test functions with special privileges like withdrawFunds
. Hence, we switch to the âownerâ account for this deployment.
Starting with a simple assertion test to learn Foundry convention. By convention, all the test functions must have the prefix test
. And we use assertEq
to test if two values are equal.
We call our MaxSupply
function and test if the result value is 100, as we described in our contract. And we use forge test
to run our tests.
And Voila!!! we have a passed test.
Now that we have written a simple test, letâs write one with cheatcodes. The primary function of our contract.
balanceOf
Alice is 1We have another testing function used for tests that we expect to fail. The prefix used for such a test is testFail
. We will test if the mint
function reverts if the caller has insufficient funds.
Switch user account to Bob
Set Bobâs balance to 0.5 ether (our NFT is 0.69 ether)
Call the mint function (it will be reverted due to not having enough funds)
Check if balanceOf
Bob is 1
Because mint didnât go through, the balance of Bob is not going to be 1. Hence, it will fail, which is exactly what we are used testFail
for. So when you run forge test
, it will pass.
Here we will test a function that only the âownerâ can successfully perform. For this test, we will :
withdrawFunds
function ( if successful, it should make the ownerâs balance 0.69 ether)To verify, we assert if the ownerâs balance is 0.69 ether
Now that we have tested our contract, it is time to deploy it. We need private keys to a wallet (with some Rinkeby test ETH) and an RPC URL. For our RPC URL, we will use Figment DataHu.
Figment DataHub provides us with infrastructure to develop on Web 3. It supports multiple chains like Ethereum, Celo, Solana, Terra, etc.
You can get your RPC URL for Rinkeby from under the âProtocolsâ tab.
Open your terminal to enter both of these things as environment variables.
export FIG_RINKEBY_URL=<Your RPC endpoint>
export PVT_KEY=<Your wallets private key>
Once we have the environment variables, we are all set to deploy
forge create Figbot --rpc-url=$FIG_RINKEBY_URL --private-key=$PVT_KEY
We are almost done here. So far, we have written, tested, and deployed a smart contract with Foundry and Figment DataHub. But we are not entirely done just yet. We are now going to verify our contract. We will need to set up our Etherscan API key for that.
export ETHERSCAN_API=<Your Etherscan API Key>
And now we can verify our smart contract.
forge verify-contract --chain-id <Chain-Id> --num-of-optimizations 200 --compiler-version <Compiler Version> src/<Contract File>:<Contract> $ETHERSCAN_API
Congratulations! Now you can write, test, and deploy smart contracts using Foundry. I hope you enjoyed and learned from this article. I indeed enjoyed writing this. Feel free to let me know your thoughts about it.
This story was originally published at https://hackernoon.com/how-to-build-an-nft-project-with-foundry-and-figment-datahub
#nft #datahub
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Developing a mobile application can often be more challenging than it seems at first glance. Whether youâre a developer, UI designer, project lead or CEO of a mobile-based startup, writing good project briefs prior to development is pivotal. According to Tech Jury, 87% of smartphone users spend time exclusively on mobile apps, with 18-24-year-olds spending 66% of total digital time on mobile apps. Of that, 89% of the time is spent on just 18 apps depending on individual usersâ preferences, making proper app planning crucial for success.
Todayâs audiences know what they want and donât want in their mobile apps, encouraging teams to carefully write their project plans before they approach development. But how do you properly write a mobile app development brief without sacrificing your vision and staying within the initial budget? Why should you do so in the first place? Letâs discuss that and more in greater detail.
Itâs worth discussing the significance of mobile app project briefs before we tackle the writing process itself. In practice, a project brief is used as a reference tool for developers to remain focused on the clientâs deliverables. Approaching the development process without written and approved documentation can lead to drastic, last-minute changes, misunderstanding, as well as a loss of resources and brand reputation.
For example, developing a mobile app that filters restaurants based on food type, such as Happy Cow, means that developers should stay focused on it. Knowing that such and such features, UI elements, and API are necessary will help team members collaborate better in order to meet certain expectations. Whether you develop an app under your brandâs banner or outsource coding and design services to would-be clients, briefs can provide you with several benefits:
Depending on how âopenâ your project is to the public, you will want to write a detailed section about who the developers are. Elements such as company name, address, project lead, project title, as well as contact information, should be included in this introductory segment. Regardless of whether you build an in-house app or outsource developers to a client, this section is used for easy document storage and access.
#android app #ios app #minimum viable product (mvp) #mobile app development #web development #how do you write a project design #how to write a brief #how to write a project summary #how to write project summary #program brief example #project brief #project brief example #project brief template #project proposal brief #simple project brief template
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Angular is a TypeScript based framework that works in synchronization with HTML, CSS, and JavaScript. To work with angular, domain knowledge of these 3 is required.
In this article, you will get to know about the Angular Environment setup process. After reading this article, you will be able to install, setup, create, and launch your own application in Angular. So letâs start!!!
For Installing Angular on your Machine, there are 2 prerequisites:
First you need to have Node.js installed as Angular require current, active LTS or maintenance LTS version of Node.js
Download and Install Node.js version suitable for your machineâs operating system.
Angular, Angular CLI and Angular applications are dependent on npm packages. By installing Node.js, you have automatically installed the npm Package manager which will be the base for installing angular in your system. To check the presence of npm client and Angular version check of npm client, run this command:
¡ After executing the command, Angular CLI will get installed within some time. You can check it using the following command
Now as your Angular CLI is installed, you need to create a workspace to work upon your application. Methods for it are:
To create a workspace:
#angular tutorials #angular cli install #angular environment setup #angular version check #download angular #install angular #install angular cli