Operators

The following is an estimation of Qilletni's operator associativity and precedence, from highest to lowest.

Description	Operator	Associativity	Notes
member access	.	Left-to-right	Accesses properties/functions
unary postfix	x++ x--	Left-to-right	x++ x-- increments/decrements after returning the old value
unary prefix	! ++x --x	Right-to-left	! inverts a boolean, and ++x and --x increments/decrements before returning the new value
multiplicative	* /~ / %	Right-to-left	/~ is floor (integer) division, / is floating division, % is modulo
additive	+ -	Left-to-right	Handles addition/subtraction, + also handles string concatenation between numbers, strings, direct function calls and parentheses-wrapped expressions ( expression )
range/cascade	..	Left-to-right	Used both in for (i..10) or through cascade assignment foo..bar = 0 ..baz = 1
relational	> < >= <= == !=	Left-to-right	Compares two expressions, returning a boolean
logical AND	&&	Left-to-right	Checks if both sides of the keyword are true
logical OR	||	Left-to-right	Checks if at least one side of the keyword is true
type check	is	Left-to-right	Checks the type of a variable
assignment	= += -=	Right-to-left	= is not an expression, and does not return a value

Most operators create an expression. The only exceptions are assignment and range/cascade. Operators that may require some additional information are outlined below. Most are used how you would expect.

Type checking

Qilletni has relatively loose type checking, mainly in function parameters. The as operator is used to check what a variable is set to.

any a = "Hello"

printf("a = %s", [a is string]) // prints "a = true"

a = 123

printf("a = %s", [a is string]) // prints "a = false"
printf("a = %s", [a is int])    // prints "a = true"

The as operator may check if something is any native type or entity name. It may not be used to check if something is any, as everything is any.

Cascade notation

Cascade notation is a special form of assignment used with entities. Instead of returning nothing, the operator returns the result of the expression on the left, allowing for combined assignments. Take this code, which uses traditional assignment:

Coord coordinate = new Coord()
coordinate.x = 1
coordinate.y = 2
coordinate.z = 3

The cascade operator would allow you to do:

Coord coordinate = new Coord()
    ..x = 1
    ..y = 2
    ..z = 3

In one single expression.

Range notation

The range operator is unique to the for loop. It allows the specification of when the loop should end. Loops are relatively primitive, in that with built-in syntax, they always start with 0 and go to an exclusive number. Examples of this notation are:

for (i..10) { // // Prints 0-9
    print(i)
}

for (i..infinity) { // Prints from 0 to infinity until exited
    print(i)
}

Note that infinity may also follow the range operator, making the loop repeat forever until it is exited out of.