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Operators in Ruby
Ruby supports a wide variety of operators
- Unary Operators
- Arithmetic Operators
- Bitwise Operators
- Logical Operator
- Ternary Operator
- Comparison Operator
- Range Operator
Let us look into each type of operator in detail
Arithmetic Operator
These operators perform necessary arithmetic operations on the operands. These computations include all the operations that are defined in the table below.
Let x and y be two operands
| Operator | Operation | Expression | Description |
|---|---|---|---|
| + | Addition | a+b | Returns sum of a & b |
| - | Subtraction | a-b | Returns difference of a&b |
| / | Division | a/b | Returns quotient of a&b |
| * | Multiplication | a*b | Returns product of a&b |
| ** | Exponent | a**b | Returns a to the power b |
| % | Modulus | x%y | Returns remainder of a&b |
Comparison Operators
Comparison operators unlike arithmetic operators only compare two values and return true or false as the result
| Operator | Operation | Expression | x=y | x>y | x<y<y< th=""></y<> |
|---|---|---|---|---|---|
| == | Equal to | x == y | True | False | False |
| != | Not Equal to | x != y | False | True | True |
| <= | Less than equal to | x <= y | True | False | True |
| >= | Greater than Equal to | x >= y | True | True | False |
| < | Less than | x < y | False | False | True |
| > | Greater than | x > y | False | True | False |
| <==> | Combined Comparision | x <==> y | 0 | 1 | -1 |
Bitwise Operator
Bitwise operators perform operations on a bit level. After converting the value into binary form, the bitwise operators perform operations on corresponding bits of the operands.
| Operator | Operation | Expression | Description |
|---|---|---|---|
| & | Bitwise AND | a&b | Returns 1 when both corresponding bits are 1 |
| | | Bitwise OR | a|b | Returns 1 when either corresponding bits are 1 |
| ^ | Bitwise XOR | a^b | Returns 0 only when both bits are 1 |
| ~ | Compliment | ~a | Flips all the bits in the binary form of the operand |
| << | Left Shift | a<<b< td=""></b<> | shifts all the bits to the left by one position* |
| >> | Right Shift | a>>b | shifts all the bits to the right by one position* |
*In Left/Right shifts the leftmost/rightmost bit is discarded and 0 is inserted towards the other end.
Ternary Operator
| Operator | Description |
|---|---|
| ?: | Conditional expression |