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last_element_index | Function (ROM Call 0x3BA) |
AMS 1.01 or higher | estack.h |
ESI last_element_index (CESI ptr); |
Searches for the last expression in the list.
last_element_index calls next_expression_index in a loop starting from ptr until END_TAG is reached, then returns the pointer to the last encountered expression before END_TAG. So, assuming that ptr points to a member of the list (including argument lists too), last_element_index will return the pointer to the last element of the list.