Bugl — code interview practice that feels like a game

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Flash cards

Review the key moves

1/4

Core idea

What is the main idea behind Go Variable Naming Rules?

Lesson checks

Short Mimo-style checks built from this lesson's code, terms, and sequence.

1Quick choice

Which statement best captures the main point of this lesson?

2Fill blank

Complete the missing token from the example code.

___ = "John"

3Order

Put the learning moves in the order that makes the concept easiest to apply.

A variable can have a short name (like x and y) or a more descriptive name (age, price, carname, etc.

Multi-Word Variable Names

Go Variable Naming Rules

A variable can have a short name (like x and y) or a more descriptive name (age, price, carname, etc.).

Go variable naming rules

A variable name must start with a letter or an underscore character (_)
A variable name cannot start with a digit
A variable name can only contain alpha-numeric characters and underscores ( a-z, A-Z , 0-9 , and _ )
Variable names are case-sensitive (age, Age and AGE are three different variables)
There is no limit on the length of the variable name
A variable name cannot contain spaces
The variable name cannot be any Go keywords

Variable names with more than one word can be difficult to read.

There are several techniques you can use to make them more readable:

Each word, except the first, starts with a capital letter:

myVariableName = "John"

Each word starts with a capital letter:

MyVariableName = "John"

Each word is separated by an underscore character:

my_variable_name = "John"