# Cheat Sheet #day4 - Unicode

### Unicode Cheat Sheet

Unicode is a universal character encoding standard that provides a unique number for every character across different languages and scripts. It supports a vast range of characters, including symbols, emojis, and special characters. This cheat sheet provides a quick reference to commonly used Unicode characters and symbols.

#### Basic Latin Characters

- **Space**: U+0020
- **Exclamation Mark**: U+0021 (`!`)
- **Quotation Marks**: U+0022 (`"`)
- **Number Sign**: U+0023 (`#`)
- **Dollar Sign**: U+0024 (`$`)
- **Percent Sign**: U+0025 (`%`)
- **Ampersand**: U+0026 (`&`)
- **Apostrophe**: U+0027 (`'`)
- **Parentheses**: U+0028 (`(`), U+0029 (`)`)
- **Asterisk**: U+002A (`*`)
- **Plus Sign**: U+002B (`+`)
- **Comma**: U+002C (`,`)

#### Mathematical Symbols
- **Less-Than Sign**: U+003C (`<`)
- **Equals Sign**: U+003D (`=`)
- **Greater-Than Sign**: U+003E (`>`)
- **Division Sign**: U+00F7 (`÷`)
- **Multiplication Sign**: U+00D7 (`×`)
- **Plus-Minus Sign**: U+00B1 (`±`)
- **Infinity**: U+221E (∞)
- **Pi**: U+03C0 (π)
- **Square Root**: U+221A (√)

#### Currency Symbols
- **Dollar Sign**: U+0024 (`$`)
- **Euro Sign**: U+20AC (`€`)
- **Pound Sign**: U+00A3 (`£`)
- **Yen Sign**: U+00A5 (`¥`)
- **Indian Rupee Sign**: U+20B9 (`₹`)

#### Arrows
- **Left Arrow**: U+2190 (←)
- **Up Arrow**: U+2191 (↑)
- **Right Arrow**: U+2192 (→)
- **Down Arrow**: U+2193 (↓)
- **Left-Right Arrow**: U+2194 (↔)
- **Up-Down Arrow**: U+2195 (↕)
- **Right Arrow with Hook**: U+21AA (↪)

#### Greek Alphabet
- **Alpha**: U+0391 (Α), U+03B1 (α)
- **Beta**: U+0392 (Β), U+03B2 (β)
- **Gamma**: U+0393 (Γ), U+03B3 (γ)
- **Delta**: U+0394 (Δ), U+03B4 (δ)
- **Epsilon**: U+0395 (Ε), U+03B5 (ε)

#### Box Drawing
- **Light Horizontal**: U+2500 (─)
- **Light Vertical**: U+2502 (│)
- **Light Down and Right**: U+250C (┌)
- **Light Down and Left**: U+2510 (┐)
- **Light Up and Right**: U+2514 (└)
- **Light Up and Left**: U+2518 (┘)
- **Light Vertical and Right**: U+251C (├)
- **Light Vertical and Left**: U+2524 (┤)
- **Light Down and Horizontal**: U+252C (┬)
- **Light Up and Horizontal**: U+2534 (┴)
- **Light Vertical and Horizontal**: U+253C (┼)

#### Miscellaneous Symbols
- **Bullet**: U+2022 (-)
- **Middle Dot**: U+00B7 (-)
- **Ellipsis**: U+2026 (...)
- **Section Sign**: U+00A7 (§)
- **Copyright**: U+00A9 (©)
- **Registered**: U+00AE (®)
- **Degree**: U+00B0 (°)
- **Plus/Minus**: U+00B1 (±)
- **Micro**: U+00B5 (µ)
- **Paragraph**: U+00B6 (¶)

#### Punctuation
- **En Dash**: U+2013 (--)
- **Em Dash**: U+2014 (---)
- **Left Single Quotation Mark**: U+2018 (')
- **Right Single Quotation Mark**: U+2019 (')
- **Left Double Quotation Mark**: U+201C (")
- **Right Double Quotation Mark**: U+201D (")

#### Emojis
- **Smiling Face**: U+263A (☺️)
- **White Smiling Face**: U+263A (☺)
- **Thumbs Up**: U+1F44D (👍)
- **Heart**: U+2764 (❤️)
- **Star**: U+2B50 (⭐)
- **Fire**: U+1F525 (🔥)
- **Check Mark**: U+2714 (✔️)
- **Cross Mark**: U+274C (❌)
- **Warning Sign**: U+26A0 (⚠️)

#### Mathematical Operators
- **For All**: U+2200 (∀)
- **There Exists**: U+2203 (∃)
- **Nabla**: U+2207 (∇)
- **Element Of**: U+2208 (∈)
- **Not Element Of**: U+2209 (∉)
- **Union**: U+222A (∪)
- **Intersection**: U+2229 (∩)
- **Integral**: U+222B (∫)
- **Double Integral**: U+222C (∬)
- **Triple Integral**: U+222D (∭)

### How to Use Unicode Characters

- **In HTML**: Use the `&#x` or `&#` format.

  ```html
  &#x03B1;   <!-- α (alpha) -->
  &#945;     <!-- α (alpha) -->
  ```

- **In JavaScript**: Use the `\u` format.
  ```javascript
  console.log('\u03B1');   // α
  ```

- **In Python**: Use the `\u` format.
  ```python
  print('\u03B1')   # α
  ```

### Useful Resources

- **Unicode Consortium**: [unicode.org](https://unicode.org/)
- **Unicode Table**: [unicode-table.com](https://unicode-table.com/)
- **Character Map (Windows)**: `charmap` utility to find and use Unicode characters.
- **Emoji Picker (macOS)**: Press `Ctrl + Cmd + Space` to open the emoji picker.

This cheat sheet provides a quick reference to some commonly used Unicode characters and their codes, helping you easily incorporate a variety of symbols and characters into your projects.