Operators

Expressions

Grid provides a variety of operators for use in expressions, with some particular interactions between different types.

There are no type coercions in Grid, so all inputs to expression operators must be the same types, with the exception of the Truthiness operator.

Truthiness

The truthiness operator compares whether the two inputs have equivalent truthiness, returning a true or false bool accordingly.

Equality

Equality operators compare the values of inputs directly, as you might expect.

Comparison

Comparison operators work similarly to other languages for numeric types.

Characters are compared ordinally, and strings are compared character by character.

Sequence

Sequence operators work to compose arrays and maps in similar but slightly different ways.

Example:

[1, 2] + 3 // [1, 2, 3]
[1, 2] + [3, 4] // [1, 2, [3, 4]]
[1, 2] - 1 // [2]

<"a": 1> + <"b": 2> // <"a": 1, "b", 2>
<"a": 1, "b": 2> - "b" // <"a": 1>

Statements

There are a few statement operators available as well.

• The membership operator . is used for accessing a member of a namespace or type. See those sections for details.
• The conditional operator ? is used to conditionally act based on expressions.
• The pattern operator => is used to match against expressions.
• The grid operator # is used to iterate over a range of values.
• The loop operator @ is used to repeat an expression based on conditions.
• The function operators -> and >> are used to define a function and optional return types.