Around 1960, Ray Solomonoff founded the theory of universal inductive inference , the theory of prediction based on observations; for example, predicting the next symbol based upon a given series of symbols. This is a formal inductive framework that combines algorithmic information theory with the Bayesian framework. Universal inductive inference is based on solid philosophical foundations,  and can be considered as a mathematically formalized Occam's razor . Fundamental ingredients of the theory are the concepts of algorithmic probability and Kolmogorov complexity .
Yes : length('Hello')
No : length("Hello") When you pass arrays or numbers, you don't need wrapping punctuation. For example: Yes : length([1, 2, 3]) No : length("[1, 2, 3]")  To reference a value at a specific position (index) in an array, use square brackets. For example, to get the second item in an array: myArray . To reference a property in an object, use the dot operator. For example, to get the name property for a customer JSON object: "@parameters('customer').name" ? To reference null properties in an object without a runtime error, use the question mark operator. For example, to handle null outputs from a trigger, you can use this expression: @coalesce(trigger().outputs?.body?.<someProperty>, '<property-default-value>')