Except

Except(c)

represents a pattern object that matches any expression except those matching c.

Except(c, p)

represents a pattern object that matches p but not c.

Examples

>> Cases({x, a, b, x, c}, Except(x))
{a,b,c}

>> Cases({a, 0, b, 1, c, 2, 3}, Except(1, _Integer))
{0,2,3}