# How operator precedence is works in Ruby?

How operator precedence is works in Ruby? Below is the example of operator Precedence. In above example, multiply and divide have equal precedence….Operator Precedence in Ruby. Operator Category *, /, % Multiplication, division, modulo (remainder)

## How operator precedence is works in Ruby?

Below is the example of operator Precedence. In above example, multiply and divide have equal precedence….Operator Precedence in Ruby.

Operator Category
*, /, % Multiplication, division, modulo (remainder)
+, – Addition (or concatenation), subtraction
< <, > > Bitwise shift-left (or append), bitwise shift-right
& Bitwise AND

What does Ruby do when it has operators with the same level or precedence to evaluate?

Ruby associativity The associativity of operators determines the order of evaluation of operators with the same precedence level. The multiplication, deletion and the modulo operator are left to right associated. So the expression is evaluated this way: (9 / 3) * 3 and the result is 9.

### What is the order of precedence for operators?

Operators are listed in descending order of precedence. If several operators appear on the same line or in a group, they have equal precedence. All simple and compound-assignment operators have equal precedence. An expression can contain several operators with equal precedence.

Which operator has highest precedence in?

Certain operators have higher precedence than others; for example, the multiplication operator has a higher precedence than the addition operator. For example, x = 7 + 3 * 2; here, x is assigned 13, not 20 because operator * has a higher precedence than +, so it first gets multiplied with 3*2 and then adds into 7.

#### What does != Mean in Ruby?

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.

What does || mean in Ruby?

It basically works as = but with the exception that if a variable has already been assigned it will do nothing. First example: x ||= 10. Second example: x = 20 x ||= 10. In the first example x is now equal to 10.

## What is the order of precedence highest to lowest?

Explanation: Order of precedence is (highest to lowest) a -> b -> c -> d.

What does * do in Ruby?

The * is the splat operator. It expands an Array into a list of arguments, in this case a list of arguments to the Hash. [] method. (To be more precise, it expands any object that responds to to_ary / to_a , or to_a in Ruby 1.9.)