5.1.21 delete

Syntax:

delete ( list_expression, int_expression )
delete ( intvec_expression, int_expression )
delete ( ideal_expression, int_expression )
delete ( module_expression, int_expression )
delete ( list_expression, intvec_expression )
delete ( ideal_expression, intvec_expression )
delete ( module_expression, intvec_expression )

Type:

type of the first argument

Purpose:

deletes the element(s) with the given index/indices from a list/intvec/ideal/module (the input is not changed).

Example:

list l="a","b","c"; list l1=delete(l,2);l1; ==> [1]: ==> a ==> [2]: ==> c l; ==> [1]: ==> a ==> [2]: ==> b ==> [3]: ==> c delete(1..5,2); ==> 1,3,4,5 ring r=0,(x,y,z),dp; delete(maxideal(1),1); ==> _[1]=y ==> _[2]=z delete(maxideal(1),1..2); ==> _[1]=z