The use of the bitwise operator of the Golang

&      位运算 AND|      位运算 OR^      位运算 XOR&^     位清空 (AND NOT)<<     左移>>     右移

Although the sense bit operator is not used much at ordinary times, it is more interesting when it comes to underlying performance optimizations or the use of certain trick.

& (And) | (OR) Do not mention that the most commonly used things will be programmed.

^ (XOR) in the Go language, XOR is present as a two-dollar operator:

But if it appears as a unary operator, he means to take a bitwise inverse, for example

" FMT " Func Main () {    x:4    FMT. Println (^x)}
Output: 5

If the operator is a two-dollar

" FMT " Func Main () {    x:4    y:2    FMT. Println (x^y)}
Output:6

XOR is not a carry addition calculation, that is, XOR or computation. 0000 0100 + 0000 0010 = 0000 0110 = 6

The &^ (and not) bit emptying operation is related to the position of the operator variable, first look at an example:

" FMT " Func Main () {    x:2    y:4    FMT. PRINTLN (x&^y)}
Output:2

Calculate X&^y First we convert to 2 binary 0000 0010 &^ 0000 0100 = 0000 0010 If the number on the Ybit bit is 0, take the value of the corresponding position on X, if the ybit bit is 1 then take the result bit 0

>> right shift << left shift feel right shift left should also be very common using the continue to see example:

" FMT " Func Main () {    x:2    y:4    FMT. PRINTLN (x<<1)    FMT. Println (y>>1)}
Output:4 2

Convert to binary and move left or right.

The use of the bitwise operator of the Golang