Fueling Your Development Journey

npx shadcn-ui@latest add button
npx shadcn-ui@latest add card
npx shadcn-ui@latest add input

Multiple components:

.item {
  /* Grid Area - Multiple ways to use it */
  grid-area: header;                              /* Named template area */
  grid-area: 1 / 1 / 2 / 3;                       /* row-start/column-start/row-end/column-end */
  grid-area: 2 / span 3;                          /* Start at row 2, span 3 columns */

  /* Individual grid-row/column properties */
  grid-column: 1 / 3;                             /* Start / end column */
  grid-column: span 2;                            /* Span multiple columns */
  grid-row: 1 / 3;                                /* Start / end row */

  /* Individual alignment */
  justify-self: start | end | center | stretch;
  align-self: start | end | center | stretch;
  place-self: center center;                      /* Shorthand for both */
}

/* Example usage of grid-area with template areas */
.header { grid-area: header; }
.sidebar { grid-area: sidebar; }
.main { grid-area: main; }
.footer { grid-area: footer; }

<!-- Basic grid -->
<div class="grid">

<!-- Column configurations -->
<div class="grid grid-cols-3">                    <!-- 3 equal columns -->
<div class="grid grid-cols-none">                 <!-- No columns -->
<div class="grid grid-cols-[200px_1fr_200px]">    <!-- Custom columns -->

<!-- Row configurations -->
<div class="grid grid-rows-3">                    <!-- 3 equal rows -->
<div class="grid grid-rows-[200px_1fr_100px]">    <!-- Custom rows -->

<!-- Gaps -->
<div class="gap-4">                               <!-- Both row and column gap -->
<div class="gap-x-4">                             <!-- Column gap only -->
<div class="gap-y-4">                             <!-- Row gap only -->

<!-- Auto flow -->
<div class="grid-flow-row">
<div class="grid-flow-col">
<div class="grid-flow-dense">

<!-- Alignment -->
<div class="justify-items-start">
<div class="justify-items-center">
<div class="items-center">                        <!-- Vertical alignment -->

You can use either list comprehension or the filter() function to remove empty items from a list.

my_list = ["apple", "", "banana", "", "cherry", ""]
my_list = [item for item in my_list if item]
print(my_list)  # Output: ['apple', 'banana', 'cherry']

• Check for updates:

  sudo dpkg --update-avail

• Website: Subtle Patterns
• Features:
• A massive collection of subtle and repeatable background patterns.
• Free to use and download.
• Patterns are perfect for minimalistic and elegant design aesthetics.
• Best For: Web designers looking for ready-to-use, subtle background patterns to enhance user experience without overwhelming the design.

• Website: Coolors
• Features:
• Known for its excellent color palette generator, Coolors also provides the ability to generate patterns.
• Choose colors, add gradients, or even create geometric patterns.
• Perfect for creating both color schemes and patterns in one place.
• Best For: Designers who need both color palette inspiration and pattern creation in a single tool.

pm2 scale <app_name_or_id> <number_of_instances>

pm2 start app.js --max-memory-restart 300M

Key Features:

• Built on an actor model
• High-performance and scalable
• Asynchronous by default
• Extensive middleware support

let f = File::open("hello.txt").unwrap();
let f = File::open("hello.txt").expect("Failed to open hello.txt");

pub trait Summary {
    fn summarize(&self) -> String;
}

REST (Representational State Transfer) is an architectural style for designing networked applications. It relies on a stateless, client-server communication protocol, usually HTTP. RESTful APIs are widely used due to their simplicity and scalability. This comprehensive cheatsheet covers essential REST API principles and operations, complete with examples presented in HTML tables for easy reference.

This REST API cheatsheet provides a comprehensive overview of the most commonly used REST API concepts, complete with examples to help you quickly find the information you need. Whether you're building or consuming APIs, this guide serves as a quick reference to help you work more efficiently with REST APIs.

• Description: A lightweight and fully featured library for interacting with the Ethereum blockchain.
• Use Cases:
• Interact with smart contracts and wallets.
• Create and manage Ethereum addresses.
• Sign transactions and data.
• Query the Ethereum blockchain and perform low-level operations.
• Key Features:
• Modular design with a smaller bundle size compared to Web3.js.
• Built-in support for ENS (Ethereum Name Service).
• Simplified API for common Ethereum tasks.
• Installation:

  npm install ethers

• Description: A library of secure and community-vetted smart contracts for Ethereum development.
• Key Features:
• Prebuilt, secure implementations of ERC-20, ERC-721, and ERC-1155 tokens.
• Reusable components for access control, governance, and more.
• Highly customizable and extensible.
• Regularly updated with best practices for security and gas efficiency.
• Website: OpenZeppelin Contracts

• Description: The main programming language for writing smart contracts on Ethereum.
• Key Features:
• Statically-typed language designed for the Ethereum Virtual Machine (EVM).
• Supports inheritance, libraries, and user-defined types.
• Extensive support for complex data types like structs and mappings.
• Integrated development environment support in Remix, Truffle, and Hardhat.
• Website: Solidity

contract Base {
    uint public data;

    function setData(uint _data) public {
        data = _data;
    }
}

contract Derived is Base {
    function getData() public view returns (uint) {
        return data;
    }
}

Interfaces define a contract's functions without implementing them, allowing different contracts to interact.

To retrieve a specific element in the array:

SELECT preferences->>'$.languages[1]' AS second_language
FROM users
WHERE name = 'Jane Smith';

• Key Features:
• Unlimited devices per subscription.
• 3,200+ servers in 100 countries.
• CleanWeb ad-blocker.
• MultiHop for double encryption.
• No-log policy.
• Bypasser (split tunneling).
• Pricing:
• $12.95/month (monthly plan).
• $3.99/month (1-year plan).
• $2.49/month (2-year plan).
• Supported Platforms:
• Windows, macOS, iOS, Android, Linux, browsers, routers, Smart TVs.

• Key Features:
• 9,000+ servers in 91 countries.
• Dedicated streaming and torrenting servers.
• Automatic kill switch.
• No-log policy.
• 45-day money-back guarantee.
• Pricing:
• $12.99/month (monthly plan).
• $6.99/month (6-month plan).
• $2.11/month (2-year plan).
• Supported Platforms:
• Windows, macOS, iOS, Android, Linux, Smart TVs, routers, gaming consoles.

• Very fast and lightweight.
• Flexible API that supports multiple styling methods.
• Excellent TypeScript support.

• Slightly steeper learning curve due to flexibility.
• Somewhat smaller community compared to Styled Components.

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Tailwind CSS is a utility-first CSS framework that enables styling directly in the markup.

• Highly customizable and design-consistent.
• No predefined components, allowing for unique designs.

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from flask import Flask
from flask_sqlalchemy import SQLAlchemy
import os

app = Flask(__name__)

# Adjust the DATABASE_URL format for SQLAlchemy compatibility
database_url = os.getenv("DATABASE_URL", "")
if database_url.startswith("postgres://"):
    database_url = database_url.replace("postgres://", "postgresql+psycopg2://")

app.config["SQLALCHEMY_DATABASE_URI"] = database_url

# Initialize the SQLAlchemy object
db = SQLAlchemy(app)

# Sample route to test the setup
@app.route("/")
def index():
    return "Database URI setup complete!"

if __name__ == "__main__":
    app.run()

• This code retrieves the DATABASE_URL from the environment.
• If DATABASE_URL starts with postgres://, it replaces it with postgresql+psycopg2://.
• The db instance is initialized with SQLAlchemy(app) for use with SQLAlchemy ORM.
• The replacement of "postgres://" with "postgresql+psycopg2://" is necessary because of a compatibility issue between the URI format provided by Heroku and the URI format expected by SQLAlchemy.

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• language.emptyTable: Custom message displayed when no data is available.

• initComplete: Adds custom classes to dropdowns and inputs in the DataTables UI for consistent styling.

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