A value is a piece of data, like ‘Hello, World!’. Values have types: the type of ‘Hello, World!’ is named string. So we call this a string value.

A variable is a name identifying a particular place in the computer’s memory that can store some specific value. A variable (in Go and other programming languages like C and Haskell) also has a type, which determines what values it can hold.

A string variable can only hold string values, etc.

In Go, we declare a variable and its type with the following syntax

1var title string
2var copies int

The Go compiler will use the type information you’ve provided to check whether you accidentally assigned a value to the wrong type of variable.

References

• John Arundel, For the love of Go

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