Assignment operators in Go - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of assignment operators in Go?

Assignment operators in Go are used to assign values to variables. They can also combine an operation with assignment, like adding a value and then assigning the result.

beginner

What does the operator += do in Go?

The operator += adds the right-hand value to the left-hand variable and then assigns the result back to that variable. For example, x += 3 means x = x + 3.

beginner

Explain the difference between = and *= in Go.

The = operator assigns a value directly to a variable. The *= operator multiplies the variable by a value and assigns the result back to the variable. For example, x *= 2 means x = x * 2.

intermediate

Can you use assignment operators with all data types in Go?

Assignment operators work with numeric types like int, float, and also with strings for the = operator. Operators like += work with numbers and strings (for concatenation). They do not work with all types, like structs or arrays directly.

beginner

What happens if you write x -= 5 in Go?

The value 5 is subtracted from the current value of x, and the result is stored back in x. It is the same as writing x = x - 5.

What does the operator /= do in Go?

A Divides the variable by a value and assigns the result back

B Assigns a new value without any operation

C Adds a value to the variable

D Subtracts a value from the variable

The /= operator divides the variable by the right-hand value and assigns the result back to the variable.

Which operator would you use to add 10 to a variable x in Go?

A x += 10

B x =+ 10

C x =- 10

D x -= 10

The += operator adds the right-hand value to the variable and assigns the result back.

What is the result of this code snippet? var x = 5 x *= 3

A x is 8

B x is 2

C x is 15

D x is 5

The *= operator multiplies x by 3, so x becomes 15.

Which assignment operator can be used to concatenate strings in Go?

A -=

B +=

C *=

D /=

The += operator can concatenate strings by adding the right string to the left.

Is this statement true or false? "The = operator can be used to assign a value to a variable."

A Only for strings

B False

C Only for numbers

D True

The = operator assigns any compatible value to a variable.

Explain how assignment operators like += and *= work in Go with an example.

Think about how you can shorten x = x + 3 using an assignment operator.

List common assignment operators in Go and describe what each does.

Start with simple ones like = and +=, then mention others that combine operations with assignment.