Operators and expressions are used in Go to perform calculations, comparisons, and other operations on values. Here’s an overview of how they work in Go:
1. Arithmetic operators: Go supports the following arithmetic operators:
` + addition - subtraction * multiplication / division % remainder (modulo)
For example:
`` x := 10 y := 3 z := x / y // result is 3
2. Comparison operators: Go supports the following comparison operators:
== equal to != not equal to < less than <= less than or equal to > greater than >= greater than or equal to
`
For example:
` x := 10 y := 3 isEqual := x == y // result is false isLessThan := x < y // result is false
`
3. Logical operators: Go supports the following logical operators:
&& logical AND || logical OR ! logical NOT
`
For example:
` x := 10 y := 3 isTrue := x > 5 && y < 5 // result is true
`
4. Bitwise operators: Gosupports the following bitwise operators:
& bitwise AND | bitwise OR ^ bitwise XOR << left shift >> right shift
`
For example:
` x := 3 // 0011 in binary y := 6 // 0110 in binary z := x & y // result is 2 (0010 in binary)
`
5. Assignment operators: Go supports shorthand assignment operators that perform an operation and assign the result back to the same variable. For example:
` x := 10 x += 5 // equivalent to x = x + 5
`
6. Precedence: Operators in Go have a specific order of precedence, which determines the order in which operations are performed. For example, multiplication and division have a higher precedence than addition and subtraction, so they are performed first. You can use parentheses to change the order of operations.
In addition to these basic operators, Go also has other operators and expressions that are used for more advanced operations, such as type conversion, pointer operations, and channel operations. Understanding how these operators and expressions work is essential for writing effective and efficient Go code.