Inserts item into store at a position to be determined by the
compare_func.
The list must already be sorted before calling this function or the
result is undefined. Usually you would approach this by only ever
inserting items by way of this function.
Inserts item into store at a position to be determined by the compare_func.
The list must already be sorted before calling this function or the result is undefined. Usually you would approach this by only ever inserting items by way of this function.
This function takes a ref on item.