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How JSONata expressions compose — relevant anywhere you write expressions in Fuuz: screen transforms, validation expressions, data flow transforms, and saved scripts.
In JSONata, everything is an expression. An expression comprises values, functions and operators which, when evaluated, produces a resulting value. Functions and operators are applied to values which themselves can be the results of evaluating sub-expressions. In that way, the language is fully composable to any level of complexity.
Used to override the operator precedence rules. E.g.
(5 + 3) * 4Used to compute complex expressions on a context value:
Product.(Price * Quantity) — both Price and Quantity are properties of the Product objectUsed to support 'code blocks' — multiple expressions, separated by semicolons:
(expr1; expr2; expr3)Each expression in the block is evaluated in sequential order; the result of the last expression is returned from the block.