at

swordfish.function.at()

Retrieves elements or positions from a data structure based on specified indices, Boolean conditions, or ranges, and can also apply arguments to functions.

Parameters:

• X (Constant) – If only one parameter is specified: X is a Boolean expression/vector or an integer vector. If both parameters are specified: X is a scalar/vector (including tuples and array vectors) /matrix/table/dictionary/pair/function.

• index (Constant, optional) – A Boolean expression/Boolean value/scalar/vector (including tuples and array vectors) /pair, by default DFLT