up previous next
These operators create new lists.
A..B
[A,B,C,...]
[X in L: LIST | Condn: BOOL]: LIST
[E:expression | X in L]: LIST
[E:expression | X in L: LIST and Condn: BOOL]: LIST
A..B creates the list of (consecutive) integers from
A to
B;
both ends are included.
[A,B,C,...] makes a list containing the values
A,
B,
C and so on,
in that order. In particular,
[] creates the empty list.
[X in L | Condn] makes a list of those elements in
L for which
condition
Condn is true; the entries in
L are considered in order.
[E | X in L] evaluates the expression
E for each
X in
L, and collects
the results in a new list; the entries in
L are considered in order.
[E | X in L and Condn] evaluates the expression
E for each
X in
L which
satisfies the condition
Condn, and collects the results in a new list;
the entries in
L are considered in order.
/**/ []; --> empty list
[]
/**/ 1..4;
[1, 2, 3, 4]
/**/ [3,1,4,2];
[3, 1, 4, 2]
/**/ [N in 1..10 | IsPrime(N)];
[2, 3, 5, 7]
/**/ [N^2 | N in 1..4];
[1, 4, 9, 16]
/**/ [N^2 | N in 1..10 and IsPrime(N)];
[4, 9, 25, 49]
|