// Multiline strings with triple quotes
// Eliminates escape character hell and makes complex strings readable
// Perfect for: SQL, JSON, prompts, config, documentation, emails

print("=== BASIC SYNTAX ===\n")

// Double or single quotes (""" or ''')
// Preserves newlines and indentation naturally
greeting = """
Hello! This is a multiline string.
Notice: No \n escape characters needed.
No quote escaping nightmares.
"""
print(greeting)

print("=== TEMPLATES - The Killer Feature ===\n")

// Embed expressions with {{}} directly in strings
// Works with templates to create dynamic content naturally
user = "Alice"
age = 30
prompt = """
User: {{user}}
Age: {{age}}
Age next year: {{age + 1}}

This is how Duso makes LLM prompts readable!
"""
print(prompt)

print("=== PRACTICAL USE CASE: AI Prompts ===\n")

// This is where multiline strings shine - writing system prompts
context = {
  task = "code review",
  language = "Python",
  style = "friendly"
}

system_prompt = """
You are a {{context.style}} code reviewer specializing in {{context.language}}.

Your task: {{context.task}}

Instructions:
1. Focus on readability and best practices
2. Be constructive and helpful
3. Suggest improvements, don't just criticize
4. Format your response as JSON

Example feedback:
{
  "overall": "good",
  "improvements": ["add type hints", "improve variable names"]
}
"""
print(system_prompt)

print("=== JSON CONFIGURATION (No escape hell!) ===\n")

// Compare: Multiline is readable, concatenation is a nightmare
config = """
{
  "name": "MyApp",
  "version": "1.0.0",
  "settings": {
    "debug": true,
    "port": {{8080 + 20}}
  },
  "features": ["auth", "api", "cache"]
}
"""
print(config)

print("=== SQL QUERIES (Readable AND Dynamic) ===\n")

status = "active"
min_age = 18

query = """
SELECT
  id,
  name,
  email,
  created_at
FROM users
WHERE
  age > {{min_age}}
  AND status = '{{status}}'
ORDER BY created_at DESC
LIMIT 10
"""
print(query)

print("=== MULTI-PARAGRAPH TEXT (Documentation, Emails) ===\n")

company = "TechCorp"
email_body = """
Dear Customer,

Thank you for your interest in {{company}}.

We're excited to help you get started. Here's what happens next:
  • We'll review your requirements
  • Our team will reach out within 24 hours
  • We'll schedule a quick call to discuss details

Questions? Reply to this email anytime.

Best regards,
The {{company}} Team
"""
print(email_body)

print("=== SINGLE QUOTES VARIANT ===\n")

// Single quotes also work and strip leading/trailing whitespace
short = '''
This is a single-quoted multiline string.
Everything works the same - no difference.
'''
print(short)