class List

Base class: Object

Inherited classes: Empty

Description: a list of mama objects of any type

add(): Adds the given object at the end of the list
average(): Returns the average value of the list elements
count(): Returns the number of elements in the list which are equals to the given object
first(): Returns the first element in the list
head(): Returns the first element in the list
last(): Returns the last element in the list
length(): Returns the number of elements in the list
pop(): Pops and returns the element at the end of the list
push(): Pushes the given element at the end of the list
remove_first(): Removes and returns the element at the beginning of the list
remove_index(): Removes from the list the element in the given index
reverse(): Reverses the order of the list elements
null(): Returns index of the given object in the list, and -1 if the object not found
null(): Inserts the given object into the list
null(): Removes the given object from the list
sort(): Sorts the list
stddev(): Returns the standard deviation of the list
sum(): Returns the sum of the list elements