This function attempts to convert variables to snake_case, even if it's already in snake_case. The important regex lines were posted by Stack Overflow user epost in "Elegant Python function to convert CamelCase to snake_case?".
snake_case(x)A vector of names to convert.
A vector of converted names.
This series of regexes has an advantages over the current
implementations of lettercase::str_snake_case()
and snakecase::to_snake_case().
The former converts "PatientDOB" to "patientdob" and the latter converts
"patient.dob" to "patient_._dob". I'll keep an eye on these packages
(i.e., lettercase #1 for 'camelCase'
and snakecase #101). I'd prefer
to use one of them, instead of maintaining the functions.
snake_case(colnames(datasets::OrchardSprays))
#> [1] "decrease" "rowpos" "colpos" "treatment"
snake_case(colnames(datasets::iris))
#> [1] "sepal_length" "sepal_width" "petal_length" "petal_width" "species"
snake_case(c("PatientID", "PatientDOB", "DOB", "name.last", "name.first"))
#> [1] "patient_id" "patient_dob" "dob" "name_last" "name_first"