public function main() {
    // Creates a `byte` array using the `base64` byte array literal.
    byte[] _ = base64`yPHaytRgJPg+QjjylUHakEwz1fWPx/wXCW41JSmqYW8=`;

    // Creates a `byte` using a hexadecimal numeral.
    byte x = 0xA;

    // `byte & int` will be `byte`.
    byte _ = x & 0xFF;

}

Binary data

Binary data is represented by arrays of byte values. It is a special syntax for byte arrays in base 64 and base 16. The relationship between byte and int is not the same as what you are used to. A byte is an int in the range 0 to 0xFF. byte is a subtype of int. int type supports normal bitwise operators: & | ^ ~ << >> >>>. Ballerina knows the obvious rules about when bitwise operations produce a byte.

 
public function main() {

    byte[] _ = base64`yPHaytRgJPg+QjjylUHakEwz1fWPx/wXCW41JSmqYW8=`;

Creates a byte array using the base64 byte array literal.

    byte x = 0xA;

Creates a byte using a hexadecimal numeral.

    byte _ = x & 0xFF;

byte & int will be byte.

}

bal run binary_data.bal