नेपदाइ

A Programming Language with Nepali Keywords

About NepDai

NepDai is a fun Nepali programming language inspired by Bhailang and adds a unique Nepali twist to the playful coding experience. The language combines familiar programming concepts with Nepali terminology, creating a unique and culturally relevant coding experience.

"Namaste Dai" - Every NepDai program begins with this traditional Nepali greeting!

npm i -g nepdai

📖 Language Keywords

| NepDai | English | Description | |--------|---------|-------------| | solti | let/var | Variable declaration | | yadi (condition) bhane | if | Conditional statement | | natra | else | Else clause | | jaba samma | while | While loop | | vai vayo rokki | break | Break statement | | aghi badh vai | continue | Continue statement | | lekh | print | Print to console | | thik | true | Boolean true | | galat | false | Boolean false | | khali | null | Null value |

Namaste Dai
  lekh "Namaste Dai";

nepdai test.nepdai

 Namaste Dai

 tokens <file>         Show tokens for a Nepdai program
 ast <file>            Show AST for a Nepdai program
 repl                  Start Nepdai REPL

// Error: If anything is present here, greeting above all
Namaste Dai
  // code here, and no semicolon after greeting

Namaste Dai

  lekh "Hello, World!";

  solti name = "Nepal";
  lekh "Country:", name;

  solti a = 5;
  solti b = 10;
  lekh "Sum:", a + b;

Namaste Dai
  solti a = 1;
  solti b = "sahil";
  a = a++;
  b = "sahilverse";
  c = a + 10;

Namaste Dai
  solti string = "string";
  solti number = 10;
  solti float = 10.2; // Also a number
  solti true = thik; 
  solti false = galat;
  solti null = khali; 

Namaste Dai

  // Array examples in Nepdai
  solti numbers = [1, 2, 3, 4, 5];
  solti names = ["Ram", "Shyam", "Gita"];
  solti mixed = [1, "hello", thik, khali];

  lekh "Numbers:", numbers;
  lekh "Names:", names;
  lekh "Mixed array:", mixed;

  // Empty array
  solti empty = [];
  lekh "Empty array:", empty;

  // Other Operations on Arrays are not supported right now
 

| Operator | Description | Example | Result | |----------|-------------|---------|--------| | + | Addition | 5 + 3 | 8 | | - | Subtraction | 5 - 3 | 2 | | * | Multiplication | 5 * 3 | 15 | | / | Division | 6 / 3 | 2 | | % | Modulo (Remainder) | 7 % 3 | 1 | | ** | Exponentiation | 2 ** 3 | 8 |

Namaste Dai
  solti a = 10;
  solti b = 3;
  
  lekh "Addition:", a + b;        // 13
  lekh "Subtraction:", a - b;     // 7
  lekh "Multiplication:", a * b;  // 30
  lekh "Division:", a / b;        // 3.333...
  lekh "Modulo:", a % b;          // 1
  lekh "Power:", a ** b;          // 1000

| Operator | Description | Example | Result | |----------|-------------|---------|--------| | == | Equal to | 5 == 5 | thik | | != | Not equal to | 5 != 3 | thik | | > | Greater than | 5 > 3 | thik | | < | Less than | 3 < 5 | thik | | >= | Greater than or equal | 5 >= 5 | thik | | <= | Less than or equal | 3 <= 5 | thik |

Namaste Dai
  solti age = 25;
  
  lekh "Is adult:", age >= 18;     // thik
  lekh "Is teenager:", age < 20;   // galat
  lekh "Exact age:", age == 25;    // thik

| Operator | Description | Example | Result | |----------|-------------|---------|--------| | && | Logical AND | thik && galat | galat | | \|\| | Logical OR | thik \|\| galat | thik | | ! | Logical NOT | !thik | galat |

Namaste Dai
  solti age = 25;
  solti hasLicense = thik;
  
  yadi (age >= 18 && hasLicense) bhane {
      lekh "Can drive!";
  }
  
  yadi (age < 16 || !hasLicense) bhane {
      lekh "Cannot drive!";
  }

| Operator | Description | Example | Equivalent | |----------|-------------|---------|------------| | = | Simple assignment | a = 5 | a = 5 | | += | Add and assign | a += 3 | a = a + 3 | | -= | Subtract and assign | a -= 2 | a = a - 2 | | *= | Multiply and assign | a *= 2 | a = a * 2 | | /= | Divide and assign | a /= 2 | a = a / 2 |

Namaste Dai
  solti score = 100;
  
  score += 50;    // score is now 150
  score -= 25;    // score is now 125
  score *= 2;     // score is now 250
  score /= 5;     // score is now 50
  
  lekh "Final score:", score;

| Operator | Description | Example | Effect | |----------|-------------|---------|--------| | ++ | Increment (postfix) | a++ | Increase a by 1 | | -- | Decrement (postfix) | a-- | Decrease a by 1 |

Namaste Dai
  solti counter = 0;
  
  lekh "Initial:", counter;  // 0
  counter++;
  lekh "After increment:", counter;  // 1
  counter--;
  lekh "After decrement:", counter;  // 0

Namaste Dai
  solti firstName = "Ram";
  solti lastName = "Sharma";
  solti fullName = firstName + " " + lastName;
  
  lekh "Full name:", fullName;  // Ram Sharma
  
  // Mixing strings and numbers
  solti age = 25;
  solti message = "I am " + age + " years old";
  lekh message;  // I am 25 years old

1. ! (Logical NOT), - (Unary minus)
2. ** (Exponentiation)
3. *, /, % (Multiplication, Division, Modulo)
4. +, - (Addition, Subtraction)
5. <, <=, >, >= (Comparison)
6. ==, != (Equality)
7. && (Logical AND)
8. || (Logical OR)
9. =, +=, -=, *=, /= (Assignment)

Namaste Dai
  solti result = 2 + 3 * 4;     // 14 (not 20)
  solti result2 = (2 + 3) * 4;  // 20 (parentheses change order)
  
  lekh "Result 1:", result;   // 14
  lekh "Result 2:", result2;  // 20

Namaste Dai

// Conditional statements in Nepdai
solti age = 25;
solti name = "Ram";

lekh "Name:", name;
lekh "Age:", age;

yadi (age >= 18) bhane {
    lekh name, "is an adult";
} natra {
    lekh name, "is a minor";
}

// Nested conditionals
solti score = 85;

yadi (score >= 90) bhane {
    lekh "Grade: A";
} natra yadi (score >= 80) bhane {
    lekh "Grade: B";
} natra yadi (score >= 70) bhane {
    lekh "Grade: C";
} natra {
    lekh "Grade: F";
}

Namaste Dai

// While loop with break and continue
solti i = 1;

lekh "Counting with break and continue:";

jaba samma (i <= 10) {
    yadi (i == 5) bhane {
        lekh "Skipping", i;
        i++;
        aghi badh vai;
    }
    
    yadi (i == 8) bhane {
        lekh "Breaking at", i;
        vai vayo rokki;
    }
    
    lekh "Number:", i;
    i++;
}

lekh "Loop finished!";

Crafted in Sahilverse for the Nepali programming community

धन्यवाद (Thank you) for using NepDai! 🙏