Sequencing functions

Reference documentation for Expressif functions in the array/sequencing scope.

Name	Overview
adjacent	Evaluates an operation against every consecutive pair of input values. Returns null when the input cannot be evaluated.
lag	Returns the previous value for each input element. The first output value is null because there is no previous element. Preserves input cardinality (one output item per input item). Returns null when the input is not an enumerable or is a string.
lead	Returns the next value for each input element. The last output value is null because there is no next element. Preserves input cardinality (one output item per input item). Returns null when the input is not an enumerable or is a string.
pairwise	Returns each consecutive pair of input values as a tuple. Returns null when the input cannot be evaluated.
position-of	Returns the zero-based position of the first input item equal to the specified value. Returns null when no item matches or the input cannot be evaluated.
reverse	Returns the input enumerable with elements emitted in the opposite order. Preserves input cardinality (one output item per input item). Returns null when the input is not an enumerable or is a string.
with-position	Returns each input item paired with its zero-based position as a tuple in (position, value) order. Preserves input order and cardinality. Position terminology distinguishes sequence locations from indexes used to accelerate searches. Returns null when the input cannot be evaluated.