add_to_list/2—add an element at the beginning of a list slot
The add_to_list/2 operation adds an element at the beginning of a list slot. The syntax for this function is as follows:
add_to_list($ELEM,$LISTSLOT)
add_to_list/2 arguments
Argument | Mode | Type | Description |
|---|---|---|---|
$ELEM | Input | ANY | Specifies the element to add to the list |
$LISTSLOT | Input | SLOTREF | Specifies the list slot to which the element is to be added |
Use the add_to_list/2 operation to add the value of $ELEM as the first element of the list slot $LISTSLOT.
This primitive fails if the indicated slot is not a list slot, or if the type of the element does not correspond to the type of the elements of the list.
add_to_list/2 example
add_to_list(my_slot,$E.mc_bad_slot_names);
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