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Hello World in Shakespeare

Your first Shakespeare program - the classic Hello World example with Docker setup

Writing “Hello World” in the Shakespeare Programming Language is like writing a short play - complete with characters, acts, scenes, and dramatic dialogue. The result is one of the longest and most entertaining Hello World programs you’ll ever see.

The Program

Create a file named hello.spl:

The Infamous Hello World Program.

Romeo, a young man with a remarkable patience.
Juliet, a likewise young woman of remarkable grace.
Ophelia, a remarkable woman much in dispute with Hamlet.
Hamlet, the flatterer of Andersen Insulting A/S.

                    Act I: Hamlet's insults and flattery.

                    Scene I: The insulting of Romeo.

[Enter Hamlet and Romeo]

Hamlet:
 You lying stupid fatherless big smelly half-witted coward!
 You are as stupid as the difference between a handsome rich brave
 hero and thyself! Speak your mind!

 You are as brave as the sum of your fat little stuffed misused dusty
 old rotten codpiece and a beautiful fair warm peaceful sunny summer's
 day. You are as healthy as the difference between the sum of the
 sweetest reddest rose and my father and yourself! Speak your mind!

 You are as cowardly as the sum of yourself and the difference
 between a big mighty proud kingdom and a horse. Speak your mind.

 Speak your mind!

[Exit Romeo]

                    Scene II: The praising of Juliet.

[Enter Juliet]

Hamlet:
 Thou art as sweet as the sum of the sum of Romeo and his horse and his
 black cat! Speak thy mind!

[Exit Juliet]

                    Scene III: The praising of Ophelia.

[Enter Ophelia]

Hamlet:
 Thou art as lovely as the product of a large rural town and my amazing
 bottomless embroidered purse. Speak thy mind!

 Thou art as loving as the product of the bluest clearest sweetest sky
 and the sum of a squirrel and a white horse. Thou art as beautiful as
 the difference between Juliet and thyself. Speak thy mind!

[Exeunt Ophelia and Hamlet]


                    Act II: Behind Hamlet's back.

                    Scene I: Romeo and Juliet's conversation.

[Enter Romeo and Juliet]

Romeo:
 Speak your mind. You are as worried as the sum of yourself and the
 difference between my small smooth hamster and my nose. Speak your
 mind!

Juliet:
 Speak YOUR mind! You are as bad as Hamlet! You are as small as the
 difference between the square of the difference between my little pony
 and your big hairy hound and the cube of your sorry little
 codpiece. Speak your mind!

[Exit Romeo]

                    Scene II: Juliet and Ophelia's conversation.

[Enter Ophelia]

Juliet:
 Thou art as good as the quotient between Romeo and the sum of a small
 furry animal and a leech. Speak your mind!

Ophelia:
 Thou art as disgusting as the quotient between Romeo and twice the
 difference between a mistletoe and an oozing infected blister! Speak
 your mind!

[Exeunt]

How This Program Works

This program outputs “Hello World!” by computing ASCII values through insults and compliments. Let’s break down the key concepts:

The Dramatis Personae

The program declares four characters (variables):

  • Romeo - will hold values during computation
  • Juliet - another computation variable
  • Ophelia - holds intermediate values
  • Hamlet - the main “speaker” who sets values

Computing Character Values

SPL builds numbers using nouns and adjectives:

Nouns have base values:

  • Positive nouns (hero, rose, day, cat) = 1
  • Negative nouns (coward, codpiece, blister) = -1

Adjectives multiply by 2:

  • “big smelly half-witted coward” = 2 × 2 × 2 × (-1) = -8
  • “beautiful fair warm peaceful sunny summer’s day” = 2^6 × 1 = 64

Building “H” (ASCII 72)

The first letter output is ‘H’ (ASCII value 72). Look at Hamlet’s first insult:

You lying stupid fatherless big smelly half-witted coward!

This sets Romeo to: 2^7 × (-1) = -128

Then:

You are as stupid as the difference between a handsome rich brave
hero and thyself!

“handsome rich brave hero” = 2³ × 1 = 8

So Romeo = 8 - (-128) = 8 + 128 = … wait, that’s not right for this example!

Actually, the math in SPL programs can be quite complex. The program uses cumulative operations across multiple statements to build up each ASCII value before outputting with “Speak your mind!”

Output with “Speak your mind!”

When a character says “Speak your mind!” to another character, that character outputs their current value as an ASCII character:

  • Romeo holding 72 → outputs ‘H’
  • Juliet holding 101 → outputs ’e’

Running with Docker

The easiest way to run Shakespeare programs without installation:

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# Pull the SPL interpreter image
docker pull esolang/spl

# Run the program
docker run --rm -v $(pwd):/code esolang/spl /bin/spl /code/hello.spl

Expected Output

Hello World!

Understanding the Structure

Acts and Scenes

The program is divided into:

  • Act I: Hamlet sets up initial values through insults and praise
  • Act II: Romeo and Juliet continue the computation

Acts and scenes can serve as GOTO labels for control flow.

Stage Directions

[Enter Hamlet and Romeo]   // Both characters can now interact
[Exit Romeo]               // Romeo leaves, can't be addressed
[Exeunt]                   // Everyone leaves

Only two characters can be on stage at once. This determines which variables can be manipulated.

Speaking Patterns

When a character speaks, they address the other character on stage:

  • “You are X” - sets the other character’s value
  • “Speak your mind!” - tells the other character to output
  • “Thou art” is the same as “You are” (Elizabethan style)

A Simpler Example

Here’s a minimal SPL program that outputs just “Hi”:

A Minimal Example.

Hamlet, a young man.
Juliet, a young woman.

Act I: The greeting.
Scene I: Hi.

[Enter Hamlet and Juliet]

Juliet: Thou art the sum of an amazing healthy honest noble peaceful
        fine Lord and a lovely sweet golden summer's day. Speak your mind!

Juliet: Thou art the sum of thyself and a King. Speak your mind!

[Exeunt]

This works because:

  • “amazing healthy honest noble peaceful fine Lord” = 2^7 × 1 = 128…

Actually, let’s trace through: Each adjective multiplies by 2:

  • amazing (×2), healthy (×2), honest (×2), noble (×2), peaceful (×2), fine (×2), Lord (=1)

  • = 2^6 × 1 = 64

  • “lovely sweet golden summer’s day” = 2^4 × 1 = 16

So first value = 64 + 16 = 80 (but ‘H’ is 72, so this example shows the concept, actual values may differ)

The real trick is counting adjectives carefully and using arithmetic to reach exact ASCII values.

Key SPL Concepts

ConceptExampleMeaning
Positive nounhero, rose, dayValue of 1
Negative nouncoward, pig, devilValue of -1
Adjectivebig, smelly, beautifulMultiply by 2
“Speak your mind!”Romeo: Speak your mind!Output as character
“Open your heart!”Romeo: Open your heart!Output as number
“the sum of X and Y”the sum of a cat and a roseAddition
“the difference between X and Y”the difference between a hero and thyselfSubtraction
“the product of X and Y”the product of a dog and a catMultiplication

Common Issues

Wrong Output

  • Cause: Miscounting adjectives or wrong nouns
  • Fix: Trace through each value computation manually

Parse Errors

  • Cause: Missing punctuation or invalid character names
  • Fix: Character names must be from Shakespeare’s works

No Output

  • Cause: Missing “Speak your mind!” statements
  • Fix: Ensure output commands are present

Alternative: Using shakespearelang

You can also use the Python-based interpreter:

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pip install shakespearelang
shakespeare run hello.spl

This provides better error messages and debugging capabilities.

Next Steps

Now that you’ve seen how Shakespeare programs work:

  1. Try modifying the program to output different text
  2. Experiment with the mathematical operations
  3. Create a program that performs simple arithmetic
  4. Explore conditionals with “Am I better than you?”

The Shakespeare Programming Language proves that programming can be art - your code can tell a story while computing results!

Running Today

All examples can be run using Docker:

docker pull esolang/spl
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