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Lua - Relational Operators
Following table shows all the relational operators supported by Lua language. Assume variable A holds 10 and variable B holds 20 then −
| Operator | Description | Example |
|---|---|---|
| == | Checks if the value of two operands are equal or not, if yes then condition becomes true. | (A == B) is not true. |
| ~= | Checks if the value of two operands are equal or not, if values are not equal then condition becomes true. | (A ~= B) is true. |
| > | Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true. | (A > B) is not true. |
| < | Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true. | (A < B) is true. |
| >= | Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true. | (A >= B) is not true. |
| <= | Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true. | (A <= B) is true. |
Example - Equality and Non-Equality Checks
In this example, we're creating two variables a and b and using relational operators, we've performed equality and non-equality checks and printed the results −
main.lua
a = 10
b = 20
print("a == b = ", (a == b))
print("a ~= b = ", (a ~= b))
Output
When you build and execute the above program, it produces the following result −
a == b = false a ~= b = true
Example - Greater than, Less than Checkss
In this example, we're creating two variables a and b and using relational operators, we've performed greater than and less thanchecks and printed the results −
main.lua
a = 10
b = 20
print("a > b = ", (a > b))
print("a < b = ", (a < b))
Output
When you build and execute the above program, it produces the following result −
a > b = false a < b = true
Example - Greater than Or Equals, Less than Or Equals Checks
In this example, we're creating two variables a and b and using relational operators, we've performed greater than or equals to and less than or equals tochecks and printed the results −
main.lua
a = 10
b = 20
print("a >= b = ", (a >= b))
print("a <= b = ", (a <= b))
Output
When you build and execute the above program, it produces the following result −
a >= b = false a <= b = true
lua_operators.htm
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