Operators
Solidity supports the following types of operators
- Arithmetic Operators
- Assignment Operators
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Relational Operators
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Logical Operators
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Ternary Operator
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Bitwise Operators
Arithmetic Operators
Arithmetic operators are used to perform arithmetic or mathematical operations
| Operation |
Operator Symbol |
| Addition | + |
| Subtraction | - |
| Multiplication | * |
| Division | / |
| Increment | ++ (add 1) |
| Decrement | — (subtract 1) |
| Modulus | % (x % y gives the remainder of the integer division of x by y) |
| Exponent | ** (p**q is p to the power of q) |
Assignment Operators
Assignment operators shorten the code for the assignment of a value to a variable
| Operation |
Operator Symbol |
| Assignment | = |
| Add assignment | += |
| Subtract assignment | -= |
| Multiply assignment | *= |
| Divide Assignment | /= |
| Modulus Assignment | %= |
Relational Operators
Relational operators are the ones you will use in your conditions to compare two Data values or results
| Operator Symbol |
Operator Details |
| Assignment | = |
| == (equal) | returns true if two values are equal, false otherwise. IT’S TWO EQUAL SIGNS!!! The single equal sign is the operator used to assign a value to a variable, don’t confuse them! |
| != (not equal) | returns true if two values are not equal, false otherwise. |
| > (greater than) | returns true if the left value is greater than the right value, false otherwise. |
| >= (greater than or equal to) | returns true if the left value is greater than or equal to the right value, false otherwise. |
| < (less than) | returns true if the left value is less than the right value, false otherwise. |
| <= (less than or equal to) | returns true if the left value is less than or equal to the right value, false otherwise. |
Logical Operators
Logical operators are used to combine two or more conditions or Boolean results
| Operator Symbol |
Operator Details |
| && (logical AND) | returns true if both conditions are true, returns false otherwise. |
| || (logical OR) | returns true if at least one condition is true, returns false otherwise. |
| ! (logical NOT) | returns true if the condition is false and returns false if the condition is true. |
Bitwise Operators
Bitwise operators work directly on bit to perform bit-level operations, with 0 and 1
| Operator Symbol |
Operator Details |
| & (bitwise AND) | performs boolean AND operation on each bit of integer argument. |
| | (bitwise OR) | performs boolean OR operation on each bit of integer argument. |
| ^ (bitwise XOR = Exclusive OR) | performs boolean exclusive OR operation on each bit of integer argument. |
| ~ (bitwise NOT) | performs boolean NOT operation on each bit of integer argument. |
| << (left shift) | moves all bits of the first operand to the left by the number of places specified by the second operand. |
| >> (right shift) | moves all bits of the first operand to the right by the number of places specified by the second operand. |
