3.10 The `list` type

append( $$$$ x $)$
The append( $$$$ x $) method appends the object$ x $to a list and returns the new list.$

count( $$$$ x $)$
The count( $$$$ x $) method returns the number of items in a list that equal$ x $.$

extend( $$$$ x $)$
The extend( $$$$ x $) method appends the members of a list or vector$ x $to the operand and returns the new list.$

filter( $$$$ f $)$
The filter( $$$$ f $) method takes a pointer to a function of one argument,$ f(a) $. It calls the function for every element of the list, and returns a new list of those elements for which$ f(a) $tests true.$

index( $$$$ x $)$
The index( $$$$ x $) method returns the index of the first element of a list that equals$ x $, or$ -1 $if no elements match.$

insert $$$$ n,x $)$
The insert $$$$ n,x $) method inserts the number$ x $into a list at position$ n $, and returns the new list.$

len()
The len() method returns the number of elements in a list.

map( $$$$ f $)$
The map( $$$$ f $) method takes a pointer to a function of one argument,$ f(a) $. It calls the function for every element of the list, and returns a list of the results.$

max()
The max() method returns the highest-valued item in a list.

min()
The min() method returns the lowest-valued item in a list.

pop()
The pop() method returns the last item in a list, and removes it from the list.

reduce( $$$$ f $)$
The reduce( $$$$ f $) method takes a pointer to a function of two arguments. It first calls$ f(a,b) $on the first two elements of the list, and then continues through the list calling$ f(a,b) $on the result and the next item in the list. The final result is returned.$

reverse()
The reverse() method reverses the order of the members of a list, and returns the new list.

sort()
The sort() method sorts the members of a list into ascending order, and returns the new list.

sortOn( $$$$ f $)$
The sortOn( $$$$ f $) method sorts the members of a list using the user-supplied function$ f(a,b) $to determine the sort order.$ f $should return$ 1 $,$ 0 $or$ -1 $depending whether$ a>b $,$ a=b $or$ a<b $.$

sortOnElement( $$$$ n $)$
The sortOnElement( $$$$ n $) method sorts a list of lists on the$ n $th element of each sublist. If$ n $is negative, it counts from the final item of each list,$ n=-1 $being the last item.$

vector()
The vector() method returns the elements in a list as a vector.

3.10 The list type

3.10 The `list` type