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Bitwise operators allow you to turn specific bits within an integer on or off. Table 10-2. Bitwise Operators | Example | Name | Result |
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| $a & $b | And | Bits that are set in both $a and $b are set. | | $a | $b | Or | Bits that are set in either $a or $b are set. | | $a ^ $b | Xor |
Bits that are set in $a or $b but not both are set. | | ~ $a | Not |
Bits that are set in $a are not set, and vice versa. | | $a << $b | Shift left |
Shift the bits of $a $b steps to the left (each step means "multiply by two") | | $a >> $b | Shift right |
Shift the bits of $a $b steps to the right (each step means "divide by two") |
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