[IllidanS4]

It is a way of specifying how the consequent values in an enum get assigned. These two enums are equivalent:

pawn Код:

enum E (<<= 1)
{
    E1 = 1,
    E2,
    E3,
    E4
}

pawn Код:

enum E
{
    E1 = 1, //0b1
    E2 = 1 << 1, //0b10
    E3 = (1 << 1) << 1, //0b100
    E4 = ((1 << 1) << 1) << 1 //0b1000
}

The parentheses can contain bit shift, addition, and multiplication assignment operations. The default operation is (+= 1).