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Start your free trialDavid Reese
3,515 PointsHow come he names the variables mAuthor, mDescription, mCreationDate instead of just using this.author = author?
How come he names the variables mAuthor, mDescription, mCreationDate instead of just using this.author = author in the constructor?
3 Answers
Karen Fletcher
19,189 PointsNot sure the teacher's specific reason for why, but they're using Hungarian notation which is a common naming convention for member variables in Java and Android.
James Croxford
12,723 PointsWatching the video again, the m prefix seems to be used to aid us learners/the user of the code in distinguishing that the declared variables are member variables, and so are different to the information being passed in by the user for that instance of the class.
So in the case of: mAuthor = author; It is clear which is the member variable (left) and which is the information passed into the constructor (right)
Other than that I remember Craig saying in an earlier course that it is a matter of style, and that the m prefix is commonly used in Android programming.
Tonnie Fanadez
UX Design Techdegree Graduate 22,796 PointsAs James says it is a matter of Style this.author = author & mAuthor = author works the same