Language Reference

# With type annotation
the variable name of type String is 'Alice'
the variable count of type Number is 5

# Without type (inferred)
name is 'Alice'
count is 5

# Multi-word variable names
the variable user name of type String is 'Bob'
the variable total count of type Number is 100

# Single argument
call function greet with argument 'World'

# Multiple arguments
call function add with argument 5 and argument 3
call function process with first number 10 and second number 20

# Method call on object
call function greet on person

print 'Hello, World!'
print the variable name
print concatenate 'name: ' with name

if condition then
  print "true"
else
  print "false"
end if

# Else-if chains
if x is 1 then
  print "one"
else if x is 2 then
  print "two"
else
  print "other"
end if

for each item in list do
  print item
end for

# 'in' is optional
for each number numbers do
  print number
end for

while count is less than 10 do
  count is count plus 1
  print count
end while

# Return a value
return result

# Return nothing (Void)
return nothing
return

define function add that takes first as Number and second as Number and returns Number
  return first plus second
end function

# Void return type
define function greet that takes name as String and returns Void
  greeting is 'Hello, ' plus name
  print greeting
end function

define class Person that has
  property name of type String
  property age of type Number

  define function greet that returns Void
    print "Hello, I am " plus name
  end function
end class

# Inheritance
define class Student that extends Person
  property school of type String
end class

person is a new Person with
  name which is 'Alice'
  age which is 30

# Can also use explicit variable declaration
the variable student of type Student is a new Student with
  name which is 'Bob'
  age which is 20
  school which is 'University'

# Numbers
5
10
3.14
-5

# Strings
'hello'
"world"

# Booleans
true
false

# Nothing
nothing
void

# Single-word identifiers
x
name
count

# Multi-word identifiers
user name
total count
first item

# Arithmetic
a plus b
a minus b
a times b
a divided by b
a modulo b

# Comparison
x is 5
x is greater than 10
x is less than 5
x equals 5

# Logical
condition1 and condition2
condition1 or condition2
not condition

# Concatenate strings
result is call function concatenate with argument 'Hello, ' and argument name

# Convert to string
text_value is convert number to text

# Try-catch
try
  result is 10 divided by 0
catch error
  print "error: " plus error
end try

# Throw
if count is less than 0 then
  throw "count cannot be negative"
end if

# Import from path
import math from 'std/math'

# Import from standard location
import collections

# Use imported functions
result is call function math.square with 5