Naming Conventions
In this lesson we will learn naming convention in R.
R is a high-level programming language used primarily for statistical computing and graphics. The goal of the R Programming Style Guide is to make our R code easier to read, share, and verify. The rules below were designed in collaboration with the entire R user community at Google.
File Names
File names should end in .R and, of course, be meaningful.
# GOODpredict_ad_revenue.R# BADfoo # no extensionfoo.R # meaningless name
Identifiers
Don’t use underscores ( _ ) or hyphens ( - ) in identifiers. Identifiers should be named according to the following conventions.
Variable names
The preferred form for variable names is all lower case letters and words separated with dots for example, variable.name, but variableName is also accepted.
# GOODavg.clicks# OKavgClicks#BADavg_Clicks
Function Names
Function names should be CamelCase. Use Capitalization of the first letter to separate words within a name, for example, FunctionName.
- Make function names verbs.
# GOODCalculateAvgClicks# BADcalculate_avg_clicks # use of underscorescalculateAvgClicks # first letter is lower case
Constant Names
Constants are named like functions but with an initial k, for example, kConstantName.
# GOODkOne# BADone