Keywords

General declaration keywords

any represents any type.
set prefixes a set of value, or introduces the setter of a property within a record.
dict prefixes a dictionary.
yes and no are the two possible boolean values.

var as seen above modifies a member of a record to be a variable.
const modifies a member to be a constant (cannot even be modified when cloning the record).
base specifies that a base member is required or assigned.
init specifies that a member needs to be defined in the constructor.
prop introduces a property of a record.
new starts the constructor block of code (ended with end keyword).

async appears before fun or sub to modify a function to be asynchronous.
global appears before fun or sub to modify a function to be accessible outside of module even if the module is not imported explicitly (useful for operator overloading).
defer is a suffix to a function called to return the promise instead of the result.
mut is a prefix to a parameter to indicate its content is going to be changed by the function.
return returns to the caller (useful to exit in advance).
yield returns one value for the sequence and pauses until next element is queried.

do starts a code block. Alternatively a function result can be defined with an arrow => and an inline block is within braces {...}.
end ends a code block.
wise after a variable introduce a wise block where the variable members are directly accessible.
when introduces the error matching block.
resume instructs to resume execution after an error.