Quick Reference

Running a program

$ java -jar one.jar
>
example.one java

Programs

// Defines the program
(program Example more code...)
// Main function
(main args more code...)

Printing and input

Printing

// Print "hi" to the console with a newline
(println "hi")
// Print "hi" to the console without a newline
(print "hi")

Input

// Read user input
(read-input)

Variables and constants

Variables

// Create a local variable
((int) var var-test 123)
// Create a global variable
((int) global-var global-var-test 234)

Constants

// Create a local constant
((int) let let-test 321)
// Create a global constant
((int) global-let global-let-test 432)

Accessing variables and constants

// Access a variable
($ var-name)
// Access a constant or function argument
(@ const-name)

Types

Types

// No return value
(void)
// Nothing
(empty)
// String
(str)
// Integer
(int)
// Double
(double)
// Boolean
(bool)
// Closure
(closure)
// Any type
(object)

Casting

// Convert to string
(to-str 123)
// Convert to integer
(to-int "string")
// Convert to double
(to-double 321)
// Convert to boolean
(to-bool 0)

Math

// Add
(+ 1 1)
// Subtract
(- 2 1)
// Multiply
(* 3 2)
// Divide
(/ 6 3)
// Square root
(sqrt 64)
// Sine
(sin 3)
// Cosine
(cos 3)
// Tangent
(tan 3)
// Absolute value
(abs -3)
// Random integer
(rand-int 10)

String

// Length of a string
(strlen "hello")
// Substring
(substr "hello" 1 3)
// Split string
(split "1,2" ",")
// Split string by lines
(split-lines "1\n2")
// Trim string
(trim "%_%_%_%_%_%_%_%_hello%_%_%_%_%_%_%_%_%_%_")
// Concatenate string
(concat "1" "2")

Boolean

// Equals
(== 1 1)
// Equals object
(= "1" "1")
// Greater than
(> 2 1)
// Less than
(< 1 2)
// Greater than or equal to
(>= 2 1)
// Less then than or equal to
(<= 1 2)