Variable Naming

Naming Variables

By Ryan Winton

Variables must have meaningful names.

Names that relate to the information/data they are storing.

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A variable that stores the amount someone is paid per hour could be called payPerHour or pay_per_hour.

Meaningful
Variable Names

Naming Methods

Camel Casing

This name is given to the naming method where each new word in a variable name is given a capital letter (except the first word!).

payPerHour numberOfSubjects hoursWorked

Like a camel, these variable names have humps!

Naming Methods

Snake Casing

This name is given to the naming method where each new word in a variable name is separated by an underscore.

pay_per_hour number_of_subjects hours_worked

These variable names are like 1 long connected line like a snake!

Multiple Choice

Pick the example of Camel Casing

• testScore

• test_score

Multiple Choice

Pick the example of Snake Casing.

• cube_volume

• cubeVolume

Multiple Choice

Which of the following is not a suitable variable name?

• test_score

• TestScore

• testScore

Multiple Choice

Which of the following is not a suitable variable name?

• test_score

• testscore

• testScore

Open Ended

Give an example of a suitable name for a variable that is storing the number of subjects a pupil has taken.