3 4 The var statement 3 5 The assignment statement 3 6 Constants 4 7 The let statement 4 8 Control flow statements 4 8.1 If statement 4 8.2 Case statement 5 8.3 While statement 5 8.4 For For statement 5 8.5 Scopes and the block statement 6 8.6 Break statement 7 8.7 Continue statement 7 8.8 When statement 7 9 Statements and indentation 7 10 Procedures 8 10.1 Result variable variable 8 10.2 Parameters 9 10.3 Discard statement 9 10.4 Named arguments 10 10.5 Default values 10 10.6 Overloaded procedures 10 10.7 Operators 10 10.8 Forward declarations 11 11 Iterators

so you don’t need a main() function. You also don’t need to write semicolons at the end of every statement. This tour gives you enough information to start writing code in Swift by showing you how to accomplish see the result immediately. Download Playground ## Simple Values Use let to make a constant and var to make a variable. The value of a constant doesn't need to be known at compile time, but you must This means you can use constants to name a value that you determine once but use in many places. 1 var myVariable = 42 2 myVariable = 50 3 let myConstant = 42 A constant or variable must have the same

## Swift var people = ["Dave", "Brian", "Alex", "Alex", "  Welcome to Swift ## About don't need a main function. You also don't need to write semicolons at the end of every statement. This tour gives you enough information to start writing code in Swift by showing you how to accomplish the code listings and see the result immediately. ## Simple Values Use let to make a constant and var to make a variable. The value of a constant doesn't need to be known at compile time, but you must

out-of-bounds array access, the compiler may instead choose to allow the program to die with a fatal error. var a: array[0..1, char] let i = 5 try: a[i] = 'N' except IndexDefect: echo "invalid / ... stmt = IND{>} stmt ^+ IND{=} DED # list of statements / simpleStmt # or a simple statement ## Comments Comments start anywhere outside a string or character literal with the hash character nesting too: proc foo = ##[Long documentation comment here. ]## You can also use the discard statement together with triple quoted string literals to create multiline comments: discard "" You

189 13.2.2 The Case statement ..... 190 13.2.3 The If..then..else statement ..... 192 13.2.4 The For..to/downto..do statement ..... 193 13.2.5 The For..in..do statement ..... 195 13.2.6 The The Repeat..until statement ..... 202 13.2.7 The While..do statement ..... 203 13.2.8 The With statement ..... 204 13.2.9 Exception Statements ..... 205 13.3 Assembler statements ..... 206 4 255 16.7 Libraries 255 17 Exceptions 257 17.1 The raise statement 257 17.2 The try...except statement 259 17.3 The try...finally statement 260 17.4 Exception handling nesting 261 17.5 Exception

BLOCK ..... 341 6.8.1. Examples ..... 342 6.8.2. Input and output parameters ..... 343 6.8.3. Statement Terminators ..... 343 Procedural SQL (PSQL) Statements ..... 344 7.1. Elements of PSQL .... EXIT ..... 376 7.7.14. SUSPEND ..... 377 7.7.15. EXECUTE STATEMENT ..... 378 7.7.16. FOR SELECT ..... 385 7.7.17. FOR EXECUTE STATEMENT ..... 389 7.7.18. OPEN ..... 390 7.7.19. FETCH ..... 393 ..... 505 9.3.4. STDDEV_POP() ..... 506 9.3.5. STDDEV_SAMP() ..... 507 9.3.6. VAR_POP() ..... 508 9.3.7. VAR_SAMP() ..... 509 9.4. Linear Regression Aggregate Functions ..... 510 9.4.1. REGR_AVGX()

structures ..... 100 If statement and if expression ..... 100 The when statement ..... 102 The case statement ..... 103 The while loop ..... 104 The block statement ..... 106 For loops and 196 Raise statement ..... 196 Custom exceptions ..... 197 Try statement ..... 197 Try expressions ..... 198 Except clauses ..... 198 Imported exceptions ..... 198 Defer statement ..... 199 know the Nim programming language? • What does the Nim statement 'echo 1 + 2' print to the screen? • And can you guess what the Nim statement 'echo 1, 2' would print? • Are you sure that

structures ..... 100 If statement and if expression ..... 100 The when statement ..... 102 The case statement ..... 103 The while loop ..... 104 The block statement ..... 106 For loops and 196 Raise statement ..... 196 Custom exceptions ..... 197 Try statement ..... 197 Try expressions ..... 198 Except clauses ..... 198 Imported exceptions ..... 198 Defer statement ..... 199 know the Nim programming language? • What does the Nim statement 'echo 1 + 2' print to the screen? • And can you guess what the Nim statement 'echo 1, 2' would print? • Are you sure that

structures ..... 100 If statement and if expression ..... 100 The when statement ..... 102 The case statement ..... 103 The while loop ..... 104 The block statement ..... 106 For loops and 196 Raise statement ..... 196 Custom exceptions ..... 197 Try statement ..... 197 Try expressions ..... 198 Except clauses ..... 198 Imported exceptions ..... 198 Defer statement ..... 199 know the Nim programming language? • What does the Nim statement 'echo 1 + 2' print to the screen? • And can you guess what the Nim statement 'echo 1, 2' would print? • Are you sure that

Control structures ..... 99 If statement and if expression ..... 99 The when statement ..... 101 The case statement ..... 102 The while loop ..... 103 The block statement ..... 104 For loops and iterators 193 Raise statement ..... 193 Custom exceptions ..... 194 Try statement ..... 194 Try expressions ..... 195 Except clauses ..... 195 Imported exceptions ..... 195 Defer statement ..... 195 know the Nim programming language? • What does the Nim statement 'echo 1 + 2' print to the screen? • And can you guess what the Nim statement 'echo 1, 2' would print? • Are you sure that