style: auto-format example files with lux fmt

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

examples/postgres_demo.lux

@@ -1,72 +1,42 @@
-// PostgreSQL Database Example
-//
-// Demonstrates the Postgres effect for database operations.
-//
-// Prerequisites:
-//   - PostgreSQL server running locally
-//   - Database 'testdb' created
-//   - User 'testuser' with password 'testpass'
-//
-// To set up:
-//   createdb testdb
-//   psql testdb -c "CREATE TABLE users (id SERIAL PRIMARY KEY, name TEXT, email TEXT);"
-//
-// Run with: lux examples/postgres_demo.lux
+fn jsonStr(key: String, value: String): String = "\"" + key + "\":\"" + value + "\""
 
-// ============================================================
-// Helper Functions
-// ============================================================
+fn jsonNum(key: String, value: Int): String = "\"" + key + "\":" + toString(value)
 
-fn jsonStr(key: String, value: String): String =
-    "\"" + key + "\":\"" + value + "\""
+fn jsonObj(content: String): String = toString(" + content + ")
 
-fn jsonNum(key: String, value: Int): String =
-    "\"" + key + "\":" + toString(value)
-
-fn jsonObj(content: String): String =
-    "{" + content + "}"
-
-// ============================================================
-// Database Operations
-// ============================================================
-
-// Insert a user
 fn insertUser(connId: Int, name: String, email: String): Int with {Console, Postgres} = {
     let sql = "INSERT INTO users (name, email) VALUES ('" + name + "', '" + email + "') RETURNING id"
     Console.print("Inserting user: " + name)
     match Postgres.queryOne(connId, sql) {
-        Some(row) => {
-            Console.print("  Inserted with ID: " + toString(row.id))
-            row.id
-        },
-        None => {
-            Console.print("  Insert failed")
-            -1
-        }
-    }
+    Some(row) => {
+    Console.print("  Inserted with ID: " + toString(row.id))
+    row.id
+},
+    None => {
+    Console.print("  Insert failed")
+    -1
+},
+}
 }
 
-// Get all users
 fn getUsers(connId: Int): Unit with {Console, Postgres} = {
     Console.print("Fetching all users...")
     let rows = Postgres.query(connId, "SELECT id, name, email FROM users ORDER BY id")
     Console.print("  Found " + toString(List.length(rows)) + " users:")
-    List.forEach(rows, fn(row: { id: Int, name: String, email: String }): Unit with {Console} => {
-        Console.print("    - " + toString(row.id) + ": " + row.name + " <" + row.email + ">")
-    })
+    List.forEach(rows, fn(row: { id: Int, name: String, email: String }): Unit => {
+    Console.print("    - " + toString(row.id) + ": " + row.name + " <" + row.email + ">")
+})
 }
 
-// Get user by ID
 fn getUserById(connId: Int, id: Int): Unit with {Console, Postgres} = {
     let sql = "SELECT id, name, email FROM users WHERE id = " + toString(id)
     Console.print("Looking up user " + toString(id) + "...")
     match Postgres.queryOne(connId, sql) {
-        Some(row) => Console.print("  Found: " + row.name + " <" + row.email + ">"),
-        None => Console.print("  User not found")
-    }
+    Some(row) => Console.print("  Found: " + row.name + " <" + row.email + ">"),
+    None => Console.print("  User not found"),
+}
 }
 
-// Update user email
 fn updateUserEmail(connId: Int, id: Int, newEmail: String): Unit with {Console, Postgres} = {
     let sql = "UPDATE users SET email = '" + newEmail + "' WHERE id = " + toString(id)
     Console.print("Updating user " + toString(id) + " email to " + newEmail)
@@ -74,7 +44,6 @@ fn updateUserEmail(connId: Int, id: Int, newEmail: String): Unit with {Console,
     Console.print("  Rows affected: " + toString(affected))
 }
 
-// Delete user
 fn deleteUser(connId: Int, id: Int): Unit with {Console, Postgres} = {
     let sql = "DELETE FROM users WHERE id = " + toString(id)
     Console.print("Deleting user " + toString(id))
@@ -82,104 +51,63 @@ fn deleteUser(connId: Int, id: Int): Unit with {Console, Postgres} = {
     Console.print("  Rows affected: " + toString(affected))
 }
 
-// ============================================================
-// Transaction Example
-// ============================================================
-
 fn transactionDemo(connId: Int): Unit with {Console, Postgres} = {
     Console.print("")
     Console.print("=== Transaction Demo ===")
-
-    // Start transaction
     Console.print("Beginning transaction...")
     Postgres.beginTx(connId)
-
-    // Make some changes
     insertUser(connId, "TxUser1", "tx1@example.com")
     insertUser(connId, "TxUser2", "tx2@example.com")
-
-    // Show users before commit
     Console.print("Users before commit:")
     getUsers(connId)
-
-    // Commit the transaction
     Console.print("Committing transaction...")
     Postgres.commit(connId)
-
     Console.print("Transaction committed!")
 }
 
-// ============================================================
-// Main
-// ============================================================
-
 fn main(): Unit with {Console, Postgres} = {
     Console.print("========================================")
     Console.print("  PostgreSQL Demo")
     Console.print("========================================")
     Console.print("")
-
-    // Connect to database
     Console.print("Connecting to PostgreSQL...")
     let connStr = "host=localhost user=testuser password=testpass dbname=testdb"
     let connId = Postgres.connect(connStr)
     Console.print("Connected! Connection ID: " + toString(connId))
     Console.print("")
-
-    // Create table if not exists
     Console.print("Creating users table...")
     Postgres.execute(connId, "CREATE TABLE IF NOT EXISTS users (id SERIAL PRIMARY KEY, name TEXT NOT NULL, email TEXT NOT NULL)")
     Console.print("")
-
-    // Clear table for demo
     Console.print("Clearing existing data...")
     Postgres.execute(connId, "DELETE FROM users")
     Console.print("")
-
-    // Insert some users
     Console.print("=== Inserting Users ===")
     let id1 = insertUser(connId, "Alice", "alice@example.com")
     let id2 = insertUser(connId, "Bob", "bob@example.com")
     let id3 = insertUser(connId, "Charlie", "charlie@example.com")
     Console.print("")
-
-    // Query all users
     Console.print("=== All Users ===")
     getUsers(connId)
     Console.print("")
-
-    // Query single user
     Console.print("=== Single User Lookup ===")
     getUserById(connId, id2)
     Console.print("")
-
-    // Update user
     Console.print("=== Update User ===")
     updateUserEmail(connId, id2, "bob.new@example.com")
     getUserById(connId, id2)
     Console.print("")
-
-    // Delete user
     Console.print("=== Delete User ===")
     deleteUser(connId, id3)
     getUsers(connId)
     Console.print("")
-
-    // Transaction demo
     transactionDemo(connId)
     Console.print("")
-
-    // Final state
     Console.print("=== Final State ===")
     getUsers(connId)
     Console.print("")
-
-    // Close connection
     Console.print("Closing connection...")
     Postgres.close(connId)
     Console.print("Done!")
 }
 
-// Note: This will fail if PostgreSQL is not running
-// To test the syntax only, you can comment out the last line
 let output = run main() with {}