erase!

erase!(obj, key|filter)

obj is a set/dictionary/table.

key | filter is the elements to be deleted for a set; the keys of the members to be deleted for a dictionary; a piece of meta code with filtering conditions for a table. For details about meta code, please refer to Metaprogramming.

Eliminate elements from a set, or members from a dictionary, or rows from a table.

On a set:

y=set(8 9 4 6);
y;
// output
set(6,4,9,8)
y.erase!(6);
// output
set(4,9,8)
erase!(y, 9 8);
// output
set(4)

On a dictionary:

x=1..6;
y=11..16;
z=dict(x,y);
z;
// output
6->16
5->15
4->14
3->13
2->12
1->11

erase!(z, 1..4);
// output
6->16
5->15

On a table:

x=1..10;
y=11..20;
t=table(x,y);

erase!(t, <x<=3>);

erase!(t, <x<=9 and y>=15>);