### 4.9.3 list operations

`+`
  concatenation
`delete`
  deletes one element from list, returns new list
`insert`
  inserts or appends a new element to list, returns a new list
list_expression `[` int_expression `]`
  is a list entry; the index 1 gives the first element.

Example:

      list l1 = 1,"hello",list(-1,1);
      list l2 = list(1,5,7);
      l1 + l2;             // a new list
    ==> [1]:
    ==>    1
    ==> [2]:
    ==>    hello
    ==> [3]:
    ==>    [1]:
    ==>       -1
    ==>    [2]:
    ==>       1
    ==> [4]:
    ==>    1
    ==> [5]:
    ==>    5
    ==> [6]:
    ==>    7
      l2 = delete(l2, 2);  // delete 2nd entry
      l2;
    ==> [1]:
    ==>    1
    ==> [2]:
    ==>    7

User manual for Singular version 4-0-3, 2016, generated by texi2html.