dot-udfExists function

See if the UI function exists in given environment.

If other functions have been declared, make sure they exist too.

.udfExists(fun, nargs, envir, doList = TRUE)

Arguments

• fun: Function to check
• nargs: Number of args to check
• envir: Environment to check
• doList: A boolean to see if the functions in .udfEnv$fun should be checked too. By default TRUE, but this is called recursively for each function (and set to FALSE)

Returns

logical declaring if the udf function exists in this environment

Author(s)

Matthew L. Fidler